121023111971 has 2 divisors, whose sum is σ = 121023111972. Its totient is φ = 121023111970.

The previous prime is 121023111917. The next prime is 121023111997. The reversal of 121023111971 is 179111320121.

Together with previous prime (121023111917) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121023111971 - 2¹⁴ = 121023095587 is a prime.

It is a super-2 number, since 2×121023111971² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121023111071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511555985 + 60511555986.

It is an arithmetic number, because the mean of its divisors is an integer number (60511555986).

Almost surely, 2^121023111971 is an apocalyptic number.

121023111971 is a deficient number, since it is larger than the sum of its proper divisors (1).

121023111971 is an equidigital number, since it uses as much as digits as its factorization.

121023111971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 29.

The spelling of 121023111971 in words is "one hundred twenty-one billion, twenty-three million, one hundred eleven thousand, nine hundred seventy-one".