21120122122102 has 32 divisors (see below), whose sum is σ = 32158225800000. Its totient is φ = 10401011712000.

The previous prime is 21120122122091. The next prime is 21120122122111. The reversal of 21120122122102 is 20122122102112.

It is a self number, because there is not a number n which added to its sum of digits gives 21120122122102.

It is a congruent number.

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, 1466566102 + ... + 1466580502.

It is an arithmetic number, because the mean of its divisors is an integer number (1004944556250).

Almost surely, 2^{21120122122102} is an apocalyptic number.

21120122122102 is a deficient number, since it is larger than the sum of its proper divisors (11038103677898).

21120122122102 is a wasteful number, since it uses less digits than its factorization.

21120122122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23992.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21120122122102 its reverse (20122122102112), we get a palindrome (41242244224214).

The spelling of 21120122122102 in words is "twenty-one trillion, one hundred twenty billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred two".