2011220131 has 8 divisors (see below), whose sum is σ = 2040262560. Its totient is φ = 1982321088.

The previous prime is 2011220117. The next prime is 2011220147. The reversal of 2011220131 is 1310221102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2011220131 - 2²⁷ = 1877002403 is a prime.

It is a super-2 number, since 2×2011220131² = 8090012830679314322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011220161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7431 + ... + 63856.

It is an arithmetic number, because the mean of its divisors is an integer number (255032820).

Almost surely, 2^2011220131 is an apocalyptic number.

2011220131 is a deficient number, since it is larger than the sum of its proper divisors (29042429).

2011220131 is an equidigital number, since it uses as much as digits as its factorization.

2011220131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71693.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2011220131 is about 44846.6289814519. The cubic root of 2011220131 is about 1262.2727375265.

Adding to 2011220131 its reverse (1310221102), we get a palindrome (3321441233).

The spelling of 2011220131 in words is "two billion, eleven million, two hundred twenty thousand, one hundred thirty-one".