11221251415 has 12 divisors (see below), whose sum is σ = 14800924152. Its totient is φ = 8160909680.

The previous prime is 11221251409. The next prime is 11221251473. The reversal of 11221251415 is 51415212211.

It is not a de Polignac number, because 11221251415 - 2⁵ = 11221251383 is a prime.

It is a super-3 number, since 3×11221251415³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11221251415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9273157 + ... + 9274366.

It is an arithmetic number, because the mean of its divisors is an integer number (1233410346).

Almost surely, 2^11221251415 is an apocalyptic number.

11221251415 is a deficient number, since it is larger than the sum of its proper divisors (3579672737).

11221251415 is a wasteful number, since it uses less digits than its factorization.

11221251415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18547550 (or 18547539 counting only the distinct ones).

The product of its digits is 800, while the sum is 25.

Adding to 11221251415 its reverse (51415212211), we get a palindrome (62636463626).

The spelling of 11221251415 in words is "eleven billion, two hundred twenty-one million, two hundred fifty-one thousand, four hundred fifteen".