222122121187 has 2 divisors, whose sum is σ = 222122121188. Its totient is φ = 222122121186.

The previous prime is 222122121157. The next prime is 222122121191. The reversal of 222122121187 is 781121221222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222122121187 is a prime.

It is a super-2 number, since 2×222122121187² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222122121157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111061060593 + 111061060594.

It is an arithmetic number, because the mean of its divisors is an integer number (111061060594).

Almost surely, 2^222122121187 is an apocalyptic number.

222122121187 is a deficient number, since it is larger than the sum of its proper divisors (1).

222122121187 is an equidigital number, since it uses as much as digits as its factorization.

222122121187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3584, while the sum is 31.

The spelling of 222122121187 in words is "two hundred twenty-two billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred eighty-seven".