121020012220931 has 2 divisors, whose sum is σ = 121020012220932. Its totient is φ = 121020012220930.

The previous prime is 121020012220903. The next prime is 121020012221047. The reversal of 121020012220931 is 139022210020121.

It is a weak prime.

It is an emirp because it is prime and its reverse (139022210020121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121020012220931 is a prime.

It is a super-2 number, since 2×121020012220931² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121020012220931.

It is not a weakly prime, because it can be changed into another prime (121020012220531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510006110465 + 60510006110466.

It is an arithmetic number, because the mean of its divisors is an integer number (60510006110466).

Almost surely, 2^{121020012220931} is an apocalyptic number.

121020012220931 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020012220931 is an equidigital number, since it uses as much as digits as its factorization.

121020012220931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 121020012220931 in words is "one hundred twenty-one trillion, twenty billion, twelve million, two hundred twenty thousand, nine hundred thirty-one".