21023131230122 has 32 divisors (see below), whose sum is σ = 36116603377920. Its totient is φ = 8990683378560.

The previous prime is 21023131230107. The next prime is 21023131230149. The reversal of 21023131230122 is 22103213132012.

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, 33820628 + ... + 34436624.

It is an arithmetic number, because the mean of its divisors is an integer number (1128643855560).

Almost surely, 2^{21023131230122} is an apocalyptic number.

21023131230122 is a deficient number, since it is larger than the sum of its proper divisors (15093472147798).

21023131230122 is a wasteful number, since it uses less digits than its factorization.

21023131230122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621206.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21023131230122 its reverse (22103213132012), we get a palindrome (43126344362134).

The spelling of 21023131230122 in words is "twenty-one trillion, twenty-three billion, one hundred thirty-one million, two hundred thirty thousand, one hundred twenty-two".