11211535212 has 12 divisors (see below), whose sum is σ = 26160248856. Its totient is φ = 3737178400.

The previous prime is 11211535141. The next prime is 11211535229. The reversal of 11211535212 is 21253511211.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467147289 + ... + 467147312.

It is an arithmetic number, because the mean of its divisors is an integer number (2180020738).

Almost surely, 2^11211535212 is an apocalyptic number.

11211535212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11211535212 is an abundant number, since it is smaller than the sum of its proper divisors (14948713644).

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

11211535212 is a wasteful number, since it uses less digits than its factorization.

11211535212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934294608 (or 934294606 counting only the distinct ones).

The product of its digits is 600, while the sum is 24.

The spelling of 11211535212 in words is "eleven billion, two hundred eleven million, five hundred thirty-five thousand, two hundred twelve".