2120029993 has 4 divisors (see below), whose sum is σ = 2122516228. Its totient is φ = 2117543760.

The previous prime is 2120029981. The next prime is 2120030023. The reversal of 2120029993 is 3999200212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 449100864 + 1670929129 = 21192^2 + 40877^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120029993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120029913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1241838 + ... + 1243543.

It is an arithmetic number, because the mean of its divisors is an integer number (530629057).

Almost surely, 2^2120029993 is an apocalyptic number.

It is an amenable number.

2120029993 is a deficient number, since it is larger than the sum of its proper divisors (2486235).

2120029993 is an equidigital number, since it uses as much as digits as its factorization.

2120029993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486234.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 2120029993 is about 46043.7834349003. The cubic root of 2120029993 is about 1284.6377158533.

The spelling of 2120029993 in words is "two billion, one hundred twenty million, twenty-nine thousand, nine hundred ninety-three".