121201001101931 has 2 divisors, whose sum is σ = 121201001101932. Its totient is φ = 121201001101930.

The previous prime is 121201001101927. The next prime is 121201001102029. The reversal of 121201001101931 is 139101100102121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121201001101931 - 2² = 121201001101927 is a prime.

It is a super-2 number, since 2×121201001101931² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121201001101897 and 121201001101906.

It is not a weakly prime, because it can be changed into another prime (121201001101231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600500550965 + 60600500550966.

It is an arithmetic number, because the mean of its divisors is an integer number (60600500550966).

Almost surely, 2^{121201001101931} is an apocalyptic number.

121201001101931 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201001101931 is an equidigital number, since it uses as much as digits as its factorization.

121201001101931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 23.

The spelling of 121201001101931 in words is "one hundred twenty-one trillion, two hundred one billion, one million, one hundred one thousand, nine hundred thirty-one".