1210021120939 has 2 divisors, whose sum is σ = 1210021120940. Its totient is φ = 1210021120938.

The previous prime is 1210021120933. The next prime is 1210021120963. The reversal of 1210021120939 is 9390211200121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1210021120939 - 2¹⁹ = 1210020596651 is a prime.

It is a super-2 number, since 2×1210021120939² (a number of 25 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 1210021120939.

It is not a weakly prime, because it can be changed into another prime (1210021120933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605010560469 + 605010560470.

It is an arithmetic number, because the mean of its divisors is an integer number (605010560470).

Almost surely, 2^{1210021120939} is an apocalyptic number.

1210021120939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210021120939 is an equidigital number, since it uses as much as digits as its factorization.

1210021120939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 1210021120939 in words is "one trillion, two hundred ten billion, twenty-one million, one hundred twenty thousand, nine hundred thirty-nine".