21012100112202 has 8 divisors (see below), whose sum is σ = 42024200224416. Its totient is φ = 7004033370732.

The previous prime is 21012100112177. The next prime is 21012100112203. The reversal of 21012100112202 is 20221100121012.

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

21012100112202 is an admirable number.

It is a super-2 number, since 2×21012100112202² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21012100112203) 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, 1751008342678 + ... + 1751008342689.

It is an arithmetic number, because the mean of its divisors is an integer number (5253025028052).

Almost surely, 2^{21012100112202} is an apocalyptic number.

21012100112202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21012100112202 is a wasteful number, since it uses less digits than its factorization.

21012100112202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502016685372.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21012100112202 its reverse (20221100121012), we get a palindrome (41233200233214).

The spelling of 21012100112202 in words is "twenty-one trillion, twelve billion, one hundred million, one hundred twelve thousand, two hundred two".