1001210220999 has 16 divisors (see below), whose sum is σ = 1483292291040. Its totient is φ = 667465430400.

The previous prime is 1001210220949. The next prime is 1001210221007. The reversal of 1001210220999 is 9990220121001.

It is not a de Polignac number, because 1001210220999 - 2⁸ = 1001210220743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001210220949) 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, 2799649 + ... + 3136949.

It is an arithmetic number, because the mean of its divisors is an integer number (92705768190).

Almost surely, 2^{1001210220999} is an apocalyptic number.

1001210220999 is a deficient number, since it is larger than the sum of its proper divisors (482082070041).

1001210220999 is a wasteful number, since it uses less digits than its factorization.

1001210220999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447247 (or 447241 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The spelling of 1001210220999 in words is "one trillion, one billion, two hundred ten million, two hundred twenty thousand, nine hundred ninety-nine".