121120020971 has 2 divisors, whose sum is σ = 121120020972. Its totient is φ = 121120020970.

The previous prime is 121120020961. The next prime is 121120021027. The reversal of 121120020971 is 179020021121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121120020971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121120020971.

It is not a weakly prime, because it can be changed into another prime (121120020961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560010485 + 60560010486.

It is an arithmetic number, because the mean of its divisors is an integer number (60560010486).

Almost surely, 2^121120020971 is an apocalyptic number.

121120020971 is a deficient number, since it is larger than the sum of its proper divisors (1).

121120020971 is an equidigital number, since it uses as much as digits as its factorization.

121120020971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The spelling of 121120020971 in words is "one hundred twenty-one billion, one hundred twenty million, twenty thousand, nine hundred seventy-one".