111020102221001 has 16 divisors (see below), whose sum is σ = 111474706734864. Its totient is φ = 110566198738944.

The previous prime is 111020102220997. The next prime is 111020102221037. The reversal of 111020102221001 is 100122201020111.

It can be written as a sum of positive squares in 8 ways, for example, as 19449652350976 + 91570449870025 = 4410176^2 + 9569245^2 .

It is a cyclic number.

It is not a de Polignac number, because 111020102221001 - 2² = 111020102220997 is a prime.

It is a super-2 number, since 2×111020102221001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111020102221051) 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, 1693973705 + ... + 1694039241.

It is an arithmetic number, because the mean of its divisors is an integer number (6967169170929).

Almost surely, 2^{111020102221001} is an apocalyptic number.

It is an amenable number.

111020102221001 is a deficient number, since it is larger than the sum of its proper divisors (454604513863).

111020102221001 is a wasteful number, since it uses less digits than its factorization.

111020102221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70780.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111020102221001 its reverse (100122201020111), we get a palindrome (211142303241112).

The spelling of 111020102221001 in words is "one hundred eleven trillion, twenty billion, one hundred two million, two hundred twenty-one thousand, one".