2120118690 has 32 divisors (see below), whose sum is σ = 5089827456. Its totient is φ = 565193600.

The previous prime is 2120118683. The next prime is 2120118691. The reversal of 2120118690 is 968110212.

It is a happy number.

It is a super-2 number, since 2×2120118690² = 8989806519374632200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (2120118691) 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, 113515 + ... + 130865.

It is an arithmetic number, because the mean of its divisors is an integer number (159057108).

Almost surely, 2^2120118690 is an apocalyptic number.

2120118690 is an abundant number, since it is smaller than the sum of its proper divisors (2969708766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2120118690 is a wasteful number, since it uses less digits than its factorization.

2120118690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21434.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 2120118690 is about 46044.7466058833. The cubic root of 2120118690 is about 1284.6556309965.

The spelling of 2120118690 in words is "two billion, one hundred twenty million, one hundred eighteen thousand, six hundred ninety".