2120220154 has 16 divisors (see below), whose sum is σ = 3439192680. Its totient is φ = 974499840.

The previous prime is 2120220133. The next prime is 2120220173. The reversal of 2120220154 is 4510220212.

It can be written as a sum of positive squares in 4 ways, for example, as 2023650225 + 96569929 = 44985^2 + 9827^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162919 + ... + 175450.

Almost surely, 2^2120220154 is an apocalyptic number.

2120220154 is a deficient number, since it is larger than the sum of its proper divisors (1318972526).

2120220154 is a wasteful number, since it uses less digits than its factorization.

2120220154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338625.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 2120220154 is about 46045.8483904901. The cubic root of 2120220154 is about 1284.6761242233.

Adding to 2120220154 its reverse (4510220212), we get a palindrome (6630440366).

The spelling of 2120220154 in words is "two billion, one hundred twenty million, two hundred twenty thousand, one hundred fifty-four".