11221582620 has 24 divisors (see below), whose sum is σ = 31420431504. Its totient is φ = 2992422016.

The previous prime is 11221582613. The next prime is 11221582627. The reversal of 11221582620 is 2628512211.

It is an interprime number because it is at equal distance from previous prime (11221582613) and next prime (11221582627).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221582627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93513129 + ... + 93513248.

It is an arithmetic number, because the mean of its divisors is an integer number (1309184646).

Almost surely, 2^11221582620 is an apocalyptic number.

11221582620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221582620 is an abundant number, since it is smaller than the sum of its proper divisors (20198848884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11221582620 is a wasteful number, since it uses less digits than its factorization.

11221582620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187026389 (or 187026387 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The spelling of 11221582620 in words is "eleven billion, two hundred twenty-one million, five hundred eighty-two thousand, six hundred twenty".