22121210119993 has 2 divisors, whose sum is σ = 22121210119994. Its totient is φ = 22121210119992.

The previous prime is 22121210119991. The next prime is 22121210120063. The reversal of 22121210119993 is 39991101212122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21683802488569 + 437407631424 = 4656587^2 + 661368^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121210119993 - 2¹ = 22121210119991 is a prime.

Together with 22121210119991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22121210119991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060605059996 + 11060605059997.

It is an arithmetic number, because the mean of its divisors is an integer number (11060605059997).

Almost surely, 2^{22121210119993} is an apocalyptic number.

It is an amenable number.

22121210119993 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121210119993 is an equidigital number, since it uses as much as digits as its factorization.

22121210119993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 43.

The spelling of 22121210119993 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred ten million, one hundred nineteen thousand, nine hundred ninety-three".