222142404120021 has 72 divisors (see below), whose sum is σ = 407905511146848. Its totient is φ = 115196550840000.

The previous prime is 222142404119953. The next prime is 222142404120061. The reversal of 222142404120021 is 120021404241222.

222142404120021 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 4 + 240 + 412 + 0 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 222142404120021 - 2¹⁷ = 222142403988949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222142404120061) 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 71 ways as a sum of consecutive naturals, for example, 37329130 + ... + 42868971.

It is an arithmetic number, because the mean of its divisors is an integer number (5665354321484).

Almost surely, 2^{222142404120021} is an apocalyptic number.

222142404120021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222142404120021 is a deficient number, since it is larger than the sum of its proper divisors (185763107026827).

222142404120021 is a wasteful number, since it uses less digits than its factorization.

222142404120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80198703 (or 80198693 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 222142404120021 its reverse (120021404241222), we get a palindrome (342163808361243).

The spelling of 222142404120021 in words is "two hundred twenty-two trillion, one hundred forty-two billion, four hundred four million, one hundred twenty thousand, twenty-one".