2211202101131 has 4 divisors (see below), whose sum is σ = 2230770261432. Its totient is φ = 2191633940832.

The previous prime is 2211202101029. The next prime is 2211202101149. The reversal of 2211202101131 is 1311012021122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2211202101131 - 2³⁸ = 1936324194187 is a prime.

It is a super-2 number, since 2×2211202101131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211202101151) 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, 9784079981 + ... + 9784080206.

It is an arithmetic number, because the mean of its divisors is an integer number (557692565358).

Almost surely, 2^{2211202101131} is an apocalyptic number.

2211202101131 is a deficient number, since it is larger than the sum of its proper divisors (19568160301).

2211202101131 is a wasteful number, since it uses less digits than its factorization.

2211202101131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19568160300.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2211202101131 its reverse (1311012021122), we get a palindrome (3522214122253).

The spelling of 2211202101131 in words is "two trillion, two hundred eleven billion, two hundred two million, one hundred one thousand, one hundred thirty-one".