11212013131 has 8 divisors (see below), whose sum is σ = 12352390128. Its totient is φ = 10091820000.

The previous prime is 11212013081. The next prime is 11212013149. The reversal of 11212013131 is 13131021211.

It is a happy number.

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 11212013131 - 2⁹ = 11212012619 is a prime.

It is a super-2 number, since 2×11212013131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212013531) 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, 5044800 + ... + 5047021.

It is an arithmetic number, because the mean of its divisors is an integer number (1544048766).

Almost surely, 2^11212013131 is an apocalyptic number.

11212013131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11212013131 is a deficient number, since it is larger than the sum of its proper divisors (1140376997).

11212013131 is a wasteful number, since it uses less digits than its factorization.

11212013131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10091933.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11212013131 its reverse (13131021211), we get a palindrome (24343034342).

The spelling of 11212013131 in words is "eleven billion, two hundred twelve million, thirteen thousand, one hundred thirty-one".