2120900923 has 8 divisors (see below), whose sum is σ = 2126670048. Its totient is φ = 2115140544.

The previous prime is 2120900921. The next prime is 2120900927. The reversal of 2120900923 is 3290090212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2120900923 - 2¹ = 2120900921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120900891 and 2120900900.

It is not an unprimeable number, because it can be changed into a prime (2120900921) 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, 984015 + ... + 986167.

It is an arithmetic number, because the mean of its divisors is an integer number (265833756).

Almost surely, 2^2120900923 is an apocalyptic number.

2120900923 is a deficient number, since it is larger than the sum of its proper divisors (5769125).

2120900923 is a wasteful number, since it uses less digits than its factorization.

2120900923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 2120900923 is about 46053.2400923106. The cubic root of 2120900923 is about 1284.8136058730.

The spelling of 2120900923 in words is "two billion, one hundred twenty million, nine hundred thousand, nine hundred twenty-three".