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20023122401 = 179608918371
BaseRepresentation
bin10010101001011110…
…001001100111100001
31220200110001000012222
4102221132021213201
5312001404404101
613110513000425
71306122506102
oct225136114741
956613030188
1020023122401
118545592247
123a69853115
131b71412329
14d7d3c43a9
157c2cd701b
hex4a97899e1

20023122401 has 8 divisors (see below), whose sum is σ = 20139386400. Its totient is φ = 19906907680.

The previous prime is 20023122389. The next prime is 20023122451. The reversal of 20023122401 is 10422132002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20023122401 - 26 = 20023122337 is a prime.

It is a super-3 number, since 3×200231224013 (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20023122401.

It is not an unprimeable number, because it can be changed into a prime (20023122451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1080746 + ... + 1099116.

It is an arithmetic number, because the mean of its divisors is an integer number (2517423300).

Almost surely, 220023122401 is an apocalyptic number.

It is an amenable number.

20023122401 is a deficient number, since it is larger than the sum of its proper divisors (116263999).

20023122401 is a wasteful number, since it uses less digits than its factorization.

20023122401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24639.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20023122401 its reverse (10422132002), we get a palindrome (30445254403).

The spelling of 20023122401 in words is "twenty billion, twenty-three million, one hundred twenty-two thousand, four hundred one".

Divisors: 1 179 6089 18371 1089931 3288409 111861019 20023122401