22142202131421 has 20 divisors (see below), whose sum is σ = 33542490874464. Its totient is φ = 14553560082600.

The previous prime is 22142202131419. The next prime is 22142202131429. The reversal of 22142202131421 is 12413120224122.

22142202131421 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 2 + 20 + 213 + 1 + 421 = 666.

It is not a de Polignac number, because 22142202131421 - 2¹ = 22142202131419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142202131429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1925068335 + ... + 1925079836.

Almost surely, 2^{22142202131421} is an apocalyptic number.

It is an amenable number.

22142202131421 is a deficient number, since it is larger than the sum of its proper divisors (11400288743043).

22142202131421 is an equidigital number, since it uses as much as digits as its factorization.

22142202131421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3850148254 (or 3850148245 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 22142202131421 its reverse (12413120224122), we get a palindrome (34555322355543).

The spelling of 22142202131421 in words is "twenty-two trillion, one hundred forty-two billion, two hundred two million, one hundred thirty-one thousand, four hundred twenty-one".