1020220120999 has 2 divisors, whose sum is σ = 1020220121000. Its totient is φ = 1020220120998.

The previous prime is 1020220120919. The next prime is 1020220121033. The reversal of 1020220120999 is 9990210220201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020220120999 - 2²⁹ = 1019683250087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020220120919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510110060499 + 510110060500.

It is an arithmetic number, because the mean of its divisors is an integer number (510110060500).

Almost surely, 2^{1020220120999} is an apocalyptic number.

1020220120999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020220120999 is an equidigital number, since it uses as much as digits as its factorization.

1020220120999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 37.

The spelling of 1020220120999 in words is "one trillion, twenty billion, two hundred twenty million, one hundred twenty thousand, nine hundred ninety-nine".