11221342125520 has 80 divisors (see below), whose sum is σ = 28825360773120. Its totient is φ = 4040831117312.

The previous prime is 11221342125509. The next prime is 11221342125527. The reversal of 11221342125520 is 2552124312211.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×11221342125520² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221342125527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179338000 + ... + 179400559.

It is an arithmetic number, because the mean of its divisors is an integer number (360317009664).

Almost surely, 2^{11221342125520} is an apocalyptic number.

11221342125520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221342125520 is an abundant number, since it is smaller than the sum of its proper divisors (17604018647600).

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

11221342125520 is a wasteful number, since it uses less digits than its factorization.

11221342125520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358738612 (or 358738606 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 11221342125520 its reverse (2552124312211), we get a palindrome (13773466437731).

The spelling of 11221342125520 in words is "eleven trillion, two hundred twenty-one billion, three hundred forty-two million, one hundred twenty-five thousand, five hundred twenty".