21222123420131 has 8 divisors (see below), whose sum is σ = 21339515007360. Its totient is φ = 21104829460288.

The previous prime is 21222123420103. The next prime is 21222123420133. The reversal of 21222123420131 is 13102432122212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21222123420131 is a prime.

It is a super-2 number, since 2×21222123420131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21222123420131.

It is not an unprimeable number, because it can be changed into a prime (21222123420133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23970866 + ... + 24840423.

It is an arithmetic number, because the mean of its divisors is an integer number (2667439375920).

Almost surely, 2^{21222123420131} is an apocalyptic number.

21222123420131 is a deficient number, since it is larger than the sum of its proper divisors (117391587229).

21222123420131 is a wasteful number, since it uses less digits than its factorization.

21222123420131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48813693.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 21222123420131 its reverse (13102432122212), we get a palindrome (34324555542343).

The spelling of 21222123420131 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred twenty-three million, four hundred twenty thousand, one hundred thirty-one".