21131310123214 has 16 divisors (see below), whose sum is σ = 33562844399376. Its totient is φ = 9943745392000.

The previous prime is 21131310123199. The next prime is 21131310123221. The reversal of 21131310123214 is 41232101313112.

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, 11659777 + ... + 13349644.

It is an arithmetic number, because the mean of its divisors is an integer number (2097677774961).

Almost surely, 2^{21131310123214} is an apocalyptic number.

21131310123214 is a deficient number, since it is larger than the sum of its proper divisors (12431534276162).

21131310123214 is a wasteful number, since it uses less digits than its factorization.

21131310123214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25034291.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 21131310123214 its reverse (41232101313112), we get a palindrome (62363411436326).

The spelling of 21131310123214 in words is "twenty-one trillion, one hundred thirty-one billion, three hundred ten million, one hundred twenty-three thousand, two hundred fourteen".