2120199975 has 48 divisors (see below), whose sum is σ = 3902250240. Its totient is φ = 1128636000.

The previous prime is 2120199973. The next prime is 2120199989. The reversal of 2120199975 is 5799910212.

It is not a de Polignac number, because 2120199975 - 2¹ = 2120199973 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 2120199975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120199973) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 393550 + ... + 398900.

It is an arithmetic number, because the mean of its divisors is an integer number (81296880).

Almost surely, 2^2120199975 is an apocalyptic number.

2120199975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2120199975 is a deficient number, since it is larger than the sum of its proper divisors (1782050265).

2120199975 is a wasteful number, since it uses less digits than its factorization.

2120199975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5957 (or 5946 counting only the distinct ones).

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

The square root of 2120199975 is about 46045.6292714086. The cubic root of 2120199975 is about 1284.6720486148.

The spelling of 2120199975 in words is "two billion, one hundred twenty million, one hundred ninety-nine thousand, nine hundred seventy-five".