2124212131 has 4 divisors (see below), whose sum is σ = 2124306000. Its totient is φ = 2124118264.

The previous prime is 2124212117. The next prime is 2124212137. The reversal of 2124212131 is 1312124212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2124212131 - 2⁵ = 2124212099 is a prime.

It is a super-2 number, since 2×2124212131² = 9024554354975122322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2124212099 and 2124212108.

It is not an unprimeable number, because it can be changed into a prime (2124212137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10170 + ... + 65968.

It is an arithmetic number, because the mean of its divisors is an integer number (531076500).

Almost surely, 2^2124212131 is an apocalyptic number.

2124212131 is a deficient number, since it is larger than the sum of its proper divisors (93869).

2124212131 is an equidigital number, since it uses as much as digits as its factorization.

2124212131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93868.

The product of its digits is 192, while the sum is 19.

The square root of 2124212131 is about 46089.1758550747. The cubic root of 2124212131 is about 1285.4818868213.

Adding to 2124212131 its reverse (1312124212), we get a palindrome (3436336343).

The spelling of 2124212131 in words is "two billion, one hundred twenty-four million, two hundred twelve thousand, one hundred thirty-one".