2120009668 has 24 divisors (see below), whose sum is σ = 4243022784. Its totient is φ = 907932000.

The previous prime is 2120009641. The next prime is 2120009669. The reversal of 2120009668 is 8669000212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2120009669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14538 + ... + 66718.

It is an arithmetic number, because the mean of its divisors is an integer number (176792616).

Almost surely, 2^2120009668 is an apocalyptic number.

2120009668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2120009668 is an abundant number, since it is smaller than the sum of its proper divisors (2123013116).

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

2120009668 is a wasteful number, since it uses less digits than its factorization.

2120009668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53643 (or 53641 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 2120009668 is about 46043.5627205367. The cubic root of 2120009668 is about 1284.6336105112.

The spelling of 2120009668 in words is "two billion, one hundred twenty million, nine thousand, six hundred sixty-eight".