11501621212 has 12 divisors (see below), whose sum is σ = 20821900680. Its totient is φ = 5552506736.

The previous prime is 11501621203. The next prime is 11501621221. The reversal of 11501621212 is 21212610511.

It is an interprime number because it is at equal distance from previous prime (11501621203) and next prime (11501621221).

It is a congruent number.

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, 49575838 + ... + 49576069.

It is an arithmetic number, because the mean of its divisors is an integer number (1735158390).

Almost surely, 2^11501621212 is an apocalyptic number.

It is an amenable number.

11501621212 is a deficient number, since it is larger than the sum of its proper divisors (9320279468).

11501621212 is a wasteful number, since it uses less digits than its factorization.

11501621212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99151940 (or 99151938 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 22.

The spelling of 11501621212 in words is "eleven billion, five hundred one million, six hundred twenty-one thousand, two hundred twelve".