21010131422 has 16 divisors (see below), whose sum is σ = 36696942432. Its totient is φ = 8834448480.

The previous prime is 21010131413. The next prime is 21010131433. The reversal of 21010131422 is 22413101012.

It is a self number, because there is not a number n which added to its sum of digits gives 21010131422.

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, 14157029 + ... + 14158512.

It is an arithmetic number, because the mean of its divisors is an integer number (2293558902).

Almost surely, 2^21010131422 is an apocalyptic number.

21010131422 is a deficient number, since it is larger than the sum of its proper divisors (15686811010).

21010131422 is a wasteful number, since it uses less digits than its factorization.

21010131422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28315603.

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

Adding to 21010131422 its reverse (22413101012), we get a palindrome (43423232434).

The spelling of 21010131422 in words is "twenty-one billion, ten million, one hundred thirty-one thousand, four hundred twenty-two".