2122312143 has 16 divisors (see below), whose sum is σ = 3374608896. Its totient is φ = 1160021280.

The previous prime is 2122312121. The next prime is 2122312201. The reversal of 2122312143 is 3412132212.

It is not a de Polignac number, because 2122312143 - 2²⁴ = 2105534927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122312243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2196528 + ... + 2197493.

It is an arithmetic number, because the mean of its divisors is an integer number (210913056).

Almost surely, 2^2122312143 is an apocalyptic number.

2122312143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2122312143 is a deficient number, since it is larger than the sum of its proper divisors (1252296753).

2122312143 is a wasteful number, since it uses less digits than its factorization.

2122312143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4394054.

The product of its digits is 576, while the sum is 21.

The square root of 2122312143 is about 46068.5591591489. The cubic root of 2122312143 is about 1285.0985088021.

Adding to 2122312143 its reverse (3412132212), we get a palindrome (5534444355).

The spelling of 2122312143 in words is "two billion, one hundred twenty-two million, three hundred twelve thousand, one hundred forty-three".