11531065642212 has 48 divisors (see below), whose sum is σ = 26974946194560. Its totient is φ = 3833814327552.

The previous prime is 11531065642211. The next prime is 11531065642279. The reversal of 11531065642212 is 21224656013511.

It is not an unprimeable number, because it can be changed into a prime (11531065642211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119656864 + ... + 119753192.

It is an arithmetic number, because the mean of its divisors is an integer number (561978045720).

Almost surely, 2^{11531065642212} is an apocalyptic number.

11531065642212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11531065642212 is an abundant number, since it is smaller than the sum of its proper divisors (15443880552348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11531065642212 is a wasteful number, since it uses less digits than its factorization.

11531065642212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121860 (or 121858 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 11531065642212 in words is "eleven trillion, five hundred thirty-one billion, sixty-five million, six hundred forty-two thousand, two hundred twelve".