11220702591 has 64 divisors (see below), whose sum is σ = 18336890880. Its totient is φ = 5967561600.

The previous prime is 11220702583. The next prime is 11220702599. The reversal of 11220702591 is 19520702211.

It is an interprime number because it is at equal distance from previous prime (11220702583) and next prime (11220702599).

It is not a de Polignac number, because 11220702591 - 2³ = 11220702583 is a prime.

It is a super-2 number, since 2×11220702591² (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 (11220702599) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1914816 + ... + 1920666.

It is an arithmetic number, because the mean of its divisors is an integer number (286513920).

Almost surely, 2^11220702591 is an apocalyptic number.

11220702591 is a deficient number, since it is larger than the sum of its proper divisors (7116188289).

11220702591 is a wasteful number, since it uses less digits than its factorization.

11220702591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6004.

The product of its (nonzero) digits is 2520, while the sum is 30.

The spelling of 11220702591 in words is "eleven billion, two hundred twenty million, seven hundred two thousand, five hundred ninety-one".