121010221111987 has 2 divisors, whose sum is σ = 121010221111988. Its totient is φ = 121010221111986.

The previous prime is 121010221111963. The next prime is 121010221112063. The reversal of 121010221111987 is 789111122010121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121010221111987 - 2²⁷ = 121010086894259 is a prime.

It is a super-2 number, since 2×121010221111987² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121010221112987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505110555993 + 60505110555994.

It is an arithmetic number, because the mean of its divisors is an integer number (60505110555994).

Almost surely, 2^{121010221111987} is an apocalyptic number.

121010221111987 is a deficient number, since it is larger than the sum of its proper divisors (1).

121010221111987 is an equidigital number, since it uses as much as digits as its factorization.

121010221111987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 37.

The spelling of 121010221111987 in words is "one hundred twenty-one trillion, ten billion, two hundred twenty-one million, one hundred eleven thousand, nine hundred eighty-seven".