1101220515552 has 24 divisors (see below), whose sum is σ = 2890703853576. Its totient is φ = 367073505152.

The previous prime is 1101220515541. The next prime is 1101220515553. The reversal of 1101220515552 is 2555150221011.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1101220515552² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101220515553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5735523423 + ... + 5735523614.

It is an arithmetic number, because the mean of its divisors is an integer number (120445993899).

Almost surely, 2^{1101220515552} is an apocalyptic number.

1101220515552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1101220515552 is an abundant number, since it is smaller than the sum of its proper divisors (1789483338024).

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

1101220515552 is a wasteful number, since it uses less digits than its factorization.

1101220515552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11471047050 (or 11471047042 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 30.

Adding to 1101220515552 its reverse (2555150221011), we get a palindrome (3656370736563).

The spelling of 1101220515552 in words is "one trillion, one hundred one billion, two hundred twenty million, five hundred fifteen thousand, five hundred fifty-two".