21121102122232 has 32 divisors (see below), whose sum is σ = 47921828346720. Its totient is φ = 8519436149760.

The previous prime is 21121102122223. The next prime is 21121102122319. The reversal of 21121102122232 is 23222120112112.

It is a super-2 number, since 2×21121102122232² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 11093014869 + ... + 11093016772.

It is an arithmetic number, because the mean of its divisors is an integer number (1497557135835).

Almost surely, 2^{21121102122232} is an apocalyptic number.

It is an amenable number.

21121102122232 is an abundant number, since it is smaller than the sum of its proper divisors (26800726224488).

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

21121102122232 is a wasteful number, since it uses less digits than its factorization.

21121102122232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22186031671 (or 22186031667 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 21121102122232 its reverse (23222120112112), we get a palindrome (44343222234344).

The spelling of 21121102122232 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred two million, one hundred twenty-two thousand, two hundred thirty-two".