111020022120221 has 64 divisors (see below), whose sum is σ = 119587662028800. Its totient is φ = 102759186816000.

The previous prime is 111020022120127. The next prime is 111020022120229. The reversal of 111020022120221 is 122021220020111.

It is a de Polignac number, because none of the positive numbers 2^k-111020022120221 is a prime.

It is a super-3 number, since 3×111020022120221³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111020022120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020022120229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 122403552050 + ... + 122403552956.

It is an arithmetic number, because the mean of its divisors is an integer number (1868557219200).

Almost surely, 2^{111020022120221} is an apocalyptic number.

It is an amenable number.

111020022120221 is a deficient number, since it is larger than the sum of its proper divisors (8567639908579).

111020022120221 is a wasteful number, since it uses less digits than its factorization.

111020022120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111020022120221 its reverse (122021220020111), we get a palindrome (233041242140332).

The spelling of 111020022120221 in words is "one hundred eleven trillion, twenty billion, twenty-two million, one hundred twenty thousand, two hundred twenty-one".