121023013220999 has 2 divisors, whose sum is σ = 121023013221000. Its totient is φ = 121023013220998.

The previous prime is 121023013220861. The next prime is 121023013221013. The reversal of 121023013220999 is 999022310320121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121023013220999 - 2⁴⁴ = 103430827176583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121023013223999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511506610499 + 60511506610500.

It is an arithmetic number, because the mean of its divisors is an integer number (60511506610500).

Almost surely, 2^{121023013220999} is an apocalyptic number.

121023013220999 is a deficient number, since it is larger than the sum of its proper divisors (1).

121023013220999 is an equidigital number, since it uses as much as digits as its factorization.

121023013220999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 121023013220999 in words is "one hundred twenty-one trillion, twenty-three billion, thirteen million, two hundred twenty thousand, nine hundred ninety-nine".