2001224131 has 2 divisors, whose sum is σ = 2001224132. Its totient is φ = 2001224130.

The previous prime is 2001224123. The next prime is 2001224149. The reversal of 2001224131 is 1314221002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001224131 - 2³ = 2001224123 is a prime.

It is a super-2 number, since 2×2001224131² = 8009796044993410322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2001224101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000612065 + 1000612066.

It is an arithmetic number, because the mean of its divisors is an integer number (1000612066).

Almost surely, 2^2001224131 is an apocalyptic number.

2001224131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001224131 is an equidigital number, since it uses as much as digits as its factorization.

2001224131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2001224131 is about 44735.0436570705. The cubic root of 2001224131 is about 1260.1780488711.

Adding to 2001224131 its reverse (1314221002), we get a palindrome (3315445133).

The spelling of 2001224131 in words is "two billion, one million, two hundred twenty-four thousand, one hundred thirty-one".