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BaseRepresentation
bin10010101001010110…
…011100011001111001
31220200022020101000202
4102221112130121321
5312000400232301
613110401411545
71306066363232
oct225126343171
956608211022
1020021102201
118544432461
123a69039bb5
131b70b85949
14d7d01a089
157c2a3866b
hex4a959c679

20021102201 has 8 divisors (see below), whose sum is σ = 20079850560. Its totient is φ = 19962430992.

The previous prime is 20021102197. The next prime is 20021102203. The reversal of 20021102201 is 10220112002.

It is a happy number.

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 20021102201 - 22 = 20021102197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021102203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522566 + ... + 559568.

It is an arithmetic number, because the mean of its divisors is an integer number (2509981320).

Almost surely, 220021102201 is an apocalyptic number.

It is an amenable number.

20021102201 is a deficient number, since it is larger than the sum of its proper divisors (58748359).

20021102201 is a wasteful number, since it uses less digits than its factorization.

20021102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38575.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20021102201 its reverse (10220112002), we get a palindrome (30241214203).

The spelling of 20021102201 in words is "twenty billion, twenty-one million, one hundred two thousand, two hundred one".