22121303400187 has 2 divisors, whose sum is σ = 22121303400188. Its totient is φ = 22121303400186.

The previous prime is 22121303400181. The next prime is 22121303400233. The reversal of 22121303400187 is 78100430312122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22121303400187 - 2²³ = 22121295011579 is a prime.

It is not a weakly prime, because it can be changed into another prime (22121303400181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060651700093 + 11060651700094.

It is an arithmetic number, because the mean of its divisors is an integer number (11060651700094).

Almost surely, 2^{22121303400187} is an apocalyptic number.

22121303400187 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121303400187 is an equidigital number, since it uses as much as digits as its factorization.

22121303400187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 22121303400187 in words is "twenty-two trillion, one hundred twenty-one billion, three hundred three million, four hundred thousand, one hundred eighty-seven".