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202101299999 = 431468912529
BaseRepresentation
bin1011110000111000101…
…1010001101100011111
3201022122210020210012022
42330032023101230133
511302400413044444
6232502152130355
720413154464034
oct2741613215437
9638583223168
10202101299999
117878aa07a75
12332033969bb
131609a773961
149ad31c938b
1553ccb969ee
hex2f0e2d1b1f

202101299999 has 4 divisors (see below), whose sum is σ = 202570212960. Its totient is φ = 201632387040.

The previous prime is 202101299987. The next prime is 202101300053. The reversal of 202101299999 is 999992101202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202101299999 - 228 = 201832864543 is a prime.

It is a super-2 number, since 2×2021012999992 (a number of 23 digits) contains 22 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 202101299999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202101290999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234455834 + ... + 234456695.

It is an arithmetic number, because the mean of its divisors is an integer number (50642553240).

Almost surely, 2202101299999 is an apocalyptic number.

202101299999 is a deficient number, since it is larger than the sum of its proper divisors (468912961).

202101299999 is an equidigital number, since it uses as much as digits as its factorization.

202101299999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468912960.

The product of its (nonzero) digits is 472392, while the sum is 53.

The spelling of 202101299999 in words is "two hundred two billion, one hundred one million, two hundred ninety-nine thousand, nine hundred ninety-nine".

Divisors: 1 431 468912529 202101299999