21031123132102 has 16 divisors (see below), whose sum is σ = 32886738705024. Its totient is φ = 10075593960000.

The previous prime is 21031123132093. The next prime is 21031123132189. The reversal of 21031123132102 is 20123132113012.

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, 1679259399 + ... + 1679271922.

It is an arithmetic number, because the mean of its divisors is an integer number (2055421169064).

Almost surely, 2^{21031123132102} is an apocalyptic number.

21031123132102 is a deficient number, since it is larger than the sum of its proper divisors (11855615572922).

21031123132102 is a wasteful number, since it uses less digits than its factorization.

21031123132102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358531455.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21031123132102 its reverse (20123132113012), we get a palindrome (41154255245114).

The spelling of 21031123132102 in words is "twenty-one trillion, thirty-one billion, one hundred twenty-three million, one hundred thirty-two thousand, one hundred two".