11231256162220 has 96 divisors (see below), whose sum is σ = 25169689702080. Its totient is φ = 4197318082560.

The previous prime is 11231256162193. The next prime is 11231256162229. The reversal of 11231256162220 is 2226165213211.

It is a happy number.

It is a super-2 number, since 2×11231256162220² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11231256162229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 418111590 + ... + 418138450.

It is an arithmetic number, because the mean of its divisors is an integer number (262184267730).

Almost surely, 2^{11231256162220} is an apocalyptic number.

11231256162220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11231256162220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12584844851040).

11231256162220 is an abundant number, since it is smaller than the sum of its proper divisors (13938433539860).

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

11231256162220 is a wasteful number, since it uses less digits than its factorization.

11231256162220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42035 (or 42033 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 11231256162220 in words is "eleven trillion, two hundred thirty-one billion, two hundred fifty-six million, one hundred sixty-two thousand, two hundred twenty".