1210020002091 has 32 divisors (see below), whose sum is σ = 1817328242240. Its totient is φ = 795564115200.

The previous prime is 1210020002089. The next prime is 1210020002099. The reversal of 1210020002091 is 1902000200121.

It is not a de Polignac number, because 1210020002091 - 2¹ = 1210020002089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210020002099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40077021 + ... + 40107201.

It is an arithmetic number, because the mean of its divisors is an integer number (56791507570).

Almost surely, 2^{1210020002091} is an apocalyptic number.

1210020002091 is a deficient number, since it is larger than the sum of its proper divisors (607308240149).

1210020002091 is a wasteful number, since it uses less digits than its factorization.

1210020002091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50604 (or 50598 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 1210020002091 in words is "one trillion, two hundred ten billion, twenty million, two thousand, ninety-one".