21111102022002 has 32 divisors (see below), whose sum is σ = 44706876383232. Its totient is φ = 6622940715264.

The previous prime is 21111102021983. The next prime is 21111102022039. The reversal of 21111102022002 is 20022020111112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2220108 + ... + 6866664.

It is an arithmetic number, because the mean of its divisors is an integer number (1397089886976).

Almost surely, 2^{21111102022002} is an apocalyptic number.

21111102022002 is an abundant number, since it is smaller than the sum of its proper divisors (23595774361230).

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

21111102022002 is a wasteful number, since it uses less digits than its factorization.

21111102022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4691122.

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

Adding to 21111102022002 its reverse (20022020111112), we get a palindrome (41133122133114).

The spelling of 21111102022002 in words is "twenty-one trillion, one hundred eleven billion, one hundred two million, twenty-two thousand, two".