21310120020122 has 8 divisors (see below), whose sum is σ = 32258438562900. Its totient is φ = 10557307165824.

The previous prime is 21310120020097. The next prime is 21310120020139. The reversal of 21310120020122 is 22102002101312.

It can be written as a sum of positive squares in 2 ways, for example, as 20547989274121 + 762130746001 = 4532989^2 + 873001^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21310120020122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48876421847 + ... + 48876422282.

Almost surely, 2^{21310120020122} is an apocalyptic number.

21310120020122 is a deficient number, since it is larger than the sum of its proper divisors (10948318542778).

21310120020122 is a wasteful number, since it uses less digits than its factorization.

21310120020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97752844240.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21310120020122 its reverse (22102002101312), we get a palindrome (43412122121434).

The spelling of 21310120020122 in words is "twenty-one trillion, three hundred ten billion, one hundred twenty million, twenty thousand, one hundred twenty-two".