121120023281 has 2 divisors, whose sum is σ = 121120023282. Its totient is φ = 121120023280.

The previous prime is 121120023259. The next prime is 121120023289. The reversal of 121120023281 is 182320021121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119218278400 + 1901744881 = 345280^2 + 43609^2 .

It is a cyclic number.

It is not a de Polignac number, because 121120023281 - 2¹⁸ = 121119761137 is a prime.

It is a super-2 number, since 2×121120023281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121120023289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560011640 + 60560011641.

It is an arithmetic number, because the mean of its divisors is an integer number (60560011641).

Almost surely, 2^121120023281 is an apocalyptic number.

It is an amenable number.

121120023281 is a deficient number, since it is larger than the sum of its proper divisors (1).

121120023281 is an equidigital number, since it uses as much as digits as its factorization.

121120023281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 23.

The spelling of 121120023281 in words is "one hundred twenty-one billion, one hundred twenty million, twenty-three thousand, two hundred eighty-one".