2120001099975 has 36 divisors (see below), whose sum is σ = 4142353669272. Its totient is φ = 1027879320000.

The previous prime is 2120001099929. The next prime is 2120001099989. The reversal of 2120001099975 is 5799901000212.

It is not a de Polignac number, because 2120001099975 - 2⁷ = 2120001099847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2120001099975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 428280576 + ... + 428285525.

It is an arithmetic number, because the mean of its divisors is an integer number (115065379702).

Almost surely, 2^{2120001099975} is an apocalyptic number.

2120001099975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2120001099975 is a deficient number, since it is larger than the sum of its proper divisors (2022352569297).

2120001099975 is a wasteful number, since it uses less digits than its factorization.

2120001099975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856566128 (or 856566120 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 45.

The spelling of 2120001099975 in words is "two trillion, one hundred twenty billion, one million, ninety-nine thousand, nine hundred seventy-five".