2120002772 has 12 divisors (see below), whose sum is σ = 3725400756. Its totient is φ = 1055602560.

The previous prime is 2120002763. The next prime is 2120002777. The reversal of 2120002772 is 2772000212.

It can be written as a sum of positive squares in 2 ways, for example, as 1191216196 + 928786576 = 34514^2 + 30476^2 .

2120002772 is a modest number, since divided by 2772 gives 2120 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120002777) 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, 1098623 + ... + 1100550.

It is an arithmetic number, because the mean of its divisors is an integer number (310450063).

Almost surely, 2^2120002772 is an apocalyptic number.

It is an amenable number.

2120002772 is a deficient number, since it is larger than the sum of its proper divisors (1605397984).

2120002772 is a wasteful number, since it uses less digits than its factorization.

2120002772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199418 (or 2199416 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 2120002772 is about 46043.4878348719. The cubic root of 2120002772 is about 1284.6322176177.

Adding to 2120002772 its reverse (2772000212), we get a palindrome (4892002984).

The spelling of 2120002772 in words is "two billion, one hundred twenty million, two thousand, seven hundred seventy-two".