21311312022122 has 8 divisors (see below), whose sum is σ = 32371613198400. Its totient is φ = 10520774289324.

The previous prime is 21311312022067. The next prime is 21311312022167. The reversal of 21311312022122 is 22122021311312.

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

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, 67440860672 + ... + 67440860987.

It is an arithmetic number, because the mean of its divisors is an integer number (4046451649800).

Almost surely, 2^{21311312022122} is an apocalyptic number.

21311312022122 is a deficient number, since it is larger than the sum of its proper divisors (11060301176278).

21311312022122 is a wasteful number, since it uses less digits than its factorization.

21311312022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134881721740.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 21311312022122 its reverse (22122021311312), we get a palindrome (43433333333434).

The spelling of 21311312022122 in words is "twenty-one trillion, three hundred eleven billion, three hundred twelve million, twenty-two thousand, one hundred twenty-two".