2131122054 has 32 divisors (see below), whose sum is σ = 4366010880. Its totient is φ = 693114912.

The previous prime is 2131122053. The next prime is 2131122113. The reversal of 2131122054 is 4502211312.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2131122054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131122053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271939 + ... + 279665.

It is an arithmetic number, because the mean of its divisors is an integer number (136437840).

Almost surely, 2^2131122054 is an apocalyptic number.

2131122054 is an abundant number, since it is smaller than the sum of its proper divisors (2234888826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2131122054 is a wasteful number, since it uses less digits than its factorization.

2131122054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8844.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2131122054 is about 46164.0775278788. The cubic root of 2131122054 is about 1286.8742409731.

Adding to 2131122054 its reverse (4502211312), we get a palindrome (6633333366).

It can be divided in two parts, 21311 and 22054, that added together give a triangular number (43365 = T₂₉₄).

The spelling of 2131122054 in words is "two billion, one hundred thirty-one million, one hundred twenty-two thousand, fifty-four".