21121002101202 has 16 divisors (see below), whose sum is σ = 44726827979232. Its totient is φ = 6626196737600.

The previous prime is 21121002101189. The next prime is 21121002101263. The reversal of 21121002101202 is 20210120012112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103534323924 + ... + 103534324127.

It is an arithmetic number, because the mean of its divisors is an integer number (2795426748702).

Almost surely, 2^{21121002101202} is an apocalyptic number.

21121002101202 is an abundant number, since it is smaller than the sum of its proper divisors (23605825878030).

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

21121002101202 is a wasteful number, since it uses less digits than its factorization.

21121002101202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207068648073.

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

Adding to 21121002101202 its reverse (20210120012112), we get a palindrome (41331122113314).

The spelling of 21121002101202 in words is "twenty-one trillion, one hundred twenty-one billion, two million, one hundred one thousand, two hundred two".