11212102215 has 40 divisors (see below), whose sum is σ = 20972606688. Its totient is φ = 5719792320.

The previous prime is 11212102211. The next prime is 11212102301. The reversal of 11212102215 is 51220121211.

It is not a de Polignac number, because 11212102215 - 2² = 11212102211 is a prime.

It is a super-2 number, since 2×11212102215² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212102211) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 592516 + ... + 611145.

Almost surely, 2^11212102215 is an apocalyptic number.

11212102215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11212102215 is a deficient number, since it is larger than the sum of its proper divisors (9760504473).

11212102215 is a wasteful number, since it uses less digits than its factorization.

11212102215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203701 (or 1203692 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

Adding to 11212102215 its reverse (51220121211), we get a palindrome (62432223426).

The spelling of 11212102215 in words is "eleven billion, two hundred twelve million, one hundred two thousand, two hundred fifteen".