111223200220021 has 8 divisors (see below), whose sum is σ = 123963938326080. Its totient is φ = 99171150660288.

The previous prime is 111223200220007. The next prime is 111223200220109. The reversal of 111223200220021 is 120022002322111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111223200220021 - 2²³ = 111223191831413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111223200220421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172172136241 + ... + 172172136886.

It is an arithmetic number, because the mean of its divisors is an integer number (15495492290760).

Almost surely, 2^{111223200220021} is an apocalyptic number.

It is an amenable number.

111223200220021 is a deficient number, since it is larger than the sum of its proper divisors (12740738106059).

111223200220021 is a wasteful number, since it uses less digits than its factorization.

111223200220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344344273163.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 111223200220021 its reverse (120022002322111), we get a palindrome (231245202542132).

The spelling of 111223200220021 in words is "one hundred eleven trillion, two hundred twenty-three billion, two hundred million, two hundred twenty thousand, twenty-one".