2120055045 has 32 divisors (see below), whose sum is σ = 3489640320. Its totient is φ = 1098282240.

The previous prime is 2120055043. The next prime is 2120055089. The reversal of 2120055045 is 5405500212.

It is a happy number.

It is not a de Polignac number, because 2120055045 - 2¹ = 2120055043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120055043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 363966 + ... + 369744.

It is an arithmetic number, because the mean of its divisors is an integer number (109051260).

Almost surely, 2^2120055045 is an apocalyptic number.

It is an amenable number.

2120055045 is a deficient number, since it is larger than the sum of its proper divisors (1369585275).

2120055045 is a wasteful number, since it uses less digits than its factorization.

2120055045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6485.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 2120055045 is about 46044.0554795079. The cubic root of 2120055045 is about 1284.6427759417.

Adding to 2120055045 its reverse (5405500212), we get a palindrome (7525555257).

It can be divided in two parts, 21200 and 55045, that added together give a triangular number (76245 = T₃₉₀).

The spelling of 2120055045 in words is "two billion, one hundred twenty million, fifty-five thousand, forty-five".