22131221352127 has 2 divisors, whose sum is σ = 22131221352128. Its totient is φ = 22131221352126.

The previous prime is 22131221352103. The next prime is 22131221352131. The reversal of 22131221352127 is 72125312213122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22131221352127 - 2³⁵ = 22096861613759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22131221352092 and 22131221352101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22131221353127) 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 as a sum of consecutive naturals, namely, 11065610676063 + 11065610676064.

It is an arithmetic number, because the mean of its divisors is an integer number (11065610676064).

Almost surely, 2^{22131221352127} is an apocalyptic number.

22131221352127 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131221352127 is an equidigital number, since it uses as much as digits as its factorization.

22131221352127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

Adding to 22131221352127 its reverse (72125312213122), we get a palindrome (94256533565249).

The spelling of 22131221352127 in words is "twenty-two trillion, one hundred thirty-one billion, two hundred twenty-one million, three hundred fifty-two thousand, one hundred twenty-seven".