1022100009999 has 16 divisors (see below), whose sum is σ = 1414326251520. Its totient is φ = 655787992160.

The previous prime is 1022100009977. The next prime is 1022100010003. The reversal of 1022100009999 is 9999000012201.

It is not a de Polignac number, because 1022100009999 - 2¹³ = 1022100001807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1022100009999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022100009929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18860847 + ... + 18914960.

It is an arithmetic number, because the mean of its divisors is an integer number (88395390720).

Almost surely, 2^{1022100009999} is an apocalyptic number.

1022100009999 is a deficient number, since it is larger than the sum of its proper divisors (392226241521).

1022100009999 is a wasteful number, since it uses less digits than its factorization.

1022100009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37776150.

The product of its (nonzero) digits is 26244, while the sum is 42.

The spelling of 1022100009999 in words is "one trillion, twenty-two billion, one hundred million, nine thousand, nine hundred ninety-nine".