122011012187 has 2 divisors, whose sum is σ = 122011012188. Its totient is φ = 122011012186.

The previous prime is 122011012183. The next prime is 122011012289. The reversal of 122011012187 is 781210110221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122011012187 - 2² = 122011012183 is a prime.

It is not a weakly prime, because it can be changed into another prime (122011012181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61005506093 + 61005506094.

It is an arithmetic number, because the mean of its divisors is an integer number (61005506094).

Almost surely, 2^122011012187 is an apocalyptic number.

122011012187 is a deficient number, since it is larger than the sum of its proper divisors (1).

122011012187 is an equidigital number, since it uses as much as digits as its factorization.

122011012187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 26.

The spelling of 122011012187 in words is "one hundred twenty-two billion, eleven million, twelve thousand, one hundred eighty-seven".