111022220100021 has 32 divisors (see below), whose sum is σ = 163568636264448. Its totient is φ = 66625449327360.

The previous prime is 111022220100019. The next prime is 111022220100059. The reversal of 111022220100021 is 120001022220111.

It is not a de Polignac number, because 111022220100021 - 2¹ = 111022220100019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111022220108021) 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, 6651420 + ... + 16318266.

It is an arithmetic number, because the mean of its divisors is an integer number (5111519883264).

Almost surely, 2^{111022220100021} is an apocalyptic number.

It is an amenable number.

111022220100021 is a deficient number, since it is larger than the sum of its proper divisors (52546416164427).

111022220100021 is a wasteful number, since it uses less digits than its factorization.

111022220100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9676681.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111022220100021 its reverse (120001022220111), we get a palindrome (231023242320132).

The spelling of 111022220100021 in words is "one hundred eleven trillion, twenty-two billion, two hundred twenty million, one hundred thousand, twenty-one".