221112110011020 has 96 divisors (see below), whose sum is σ = 626021932531968. Its totient is φ = 58307300927232.

The previous prime is 221112110011007. The next prime is 221112110011021. The reversal of 221112110011020 is 20110011211122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (221112110011021) 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, 27340702 + ... + 34492581.

It is an arithmetic number, because the mean of its divisors is an integer number (6521061797208).

Almost surely, 2^{221112110011020} is an apocalyptic number.

221112110011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221112110011020 is an abundant number, since it is smaller than the sum of its proper divisors (404909822520948).

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

221112110011020 is a wasteful number, since it uses less digits than its factorization.

221112110011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61833959 (or 61833957 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221112110011020 its reverse (20110011211122), we get a palindrome (241222121222142).

The spelling of 221112110011020 in words is "two hundred twenty-one trillion, one hundred twelve billion, one hundred ten million, eleven thousand, twenty".