21031410422 has 16 divisors (see below), whose sum is σ = 36226353600. Its totient is φ = 9056588040.

The previous prime is 21031410409. The next prime is 21031410457. The reversal of 21031410422 is 22401413012.

It is a super-2 number, since 2×21031410422² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21031410394 and 21031410403.

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, 25156772 + ... + 25157607.

It is an arithmetic number, because the mean of its divisors is an integer number (2264147100).

Almost surely, 2^21031410422 is an apocalyptic number.

21031410422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21031410422 is a deficient number, since it is larger than the sum of its proper divisors (15194943178).

21031410422 is a wasteful number, since it uses less digits than its factorization.

21031410422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50314411.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21031410422 its reverse (22401413012), we get a palindrome (43432823434).

The spelling of 21031410422 in words is "twenty-one billion, thirty-one million, four hundred ten thousand, four hundred twenty-two".