22112121012187 has 2 divisors, whose sum is σ = 22112121012188. Its totient is φ = 22112121012186.

The previous prime is 22112121012143. The next prime is 22112121012259. The reversal of 22112121012187 is 78121012121122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22112121012187 - 2¹⁵ = 22112120979419 is a prime.

It is not a weakly prime, because it can be changed into another prime (22112121012587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11056060506093 + 11056060506094.

It is an arithmetic number, because the mean of its divisors is an integer number (11056060506094).

Almost surely, 2^{22112121012187} is an apocalyptic number.

22112121012187 is a deficient number, since it is larger than the sum of its proper divisors (1).

22112121012187 is an equidigital number, since it uses as much as digits as its factorization.

22112121012187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 31.

The spelling of 22112121012187 in words is "twenty-two trillion, one hundred twelve billion, one hundred twenty-one million, twelve thousand, one hundred eighty-seven".