11211938390015 has 16 divisors (see below), whose sum is σ = 14681680341120. Its totient is φ = 8151784943520.

The previous prime is 11211938390011. The next prime is 11211938390053. The reversal of 11211938390015 is 51009383911211.

It is not a de Polignac number, because 11211938390015 - 2² = 11211938390011 is a prime.

It is a super-2 number, since 2×11211938390015² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211938390011) 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, 29208425 + ... + 29589794.

It is an arithmetic number, because the mean of its divisors is an integer number (917605021320).

Almost surely, 2^{11211938390015} is an apocalyptic number.

11211938390015 is a deficient number, since it is larger than the sum of its proper divisors (3469741951105).

11211938390015 is a wasteful number, since it uses less digits than its factorization.

11211938390015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58801702.

The product of its (nonzero) digits is 58320, while the sum is 44.

The spelling of 11211938390015 in words is "eleven trillion, two hundred eleven billion, nine hundred thirty-eight million, three hundred ninety thousand, fifteen".