111210222021 has 8 divisors (see below), whose sum is σ = 149275466400. Its totient is φ = 73642562832.

The previous prime is 111210221987. The next prime is 111210222059. The reversal of 111210222021 is 120222012111.

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

It is not a de Polignac number, because 111210222021 - 2⁹ = 111210221509 is a prime.

It is a super-2 number, since 2×111210222021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111210222521) 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, 124395775 + ... + 124396668.

It is an arithmetic number, because the mean of its divisors is an integer number (18659433300).

Almost surely, 2^111210222021 is an apocalyptic number.

It is an amenable number.

111210222021 is a deficient number, since it is larger than the sum of its proper divisors (38065244379).

111210222021 is a wasteful number, since it uses less digits than its factorization.

111210222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248792595.

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

Adding to 111210222021 its reverse (120222012111), we get a palindrome (231432234132).

The spelling of 111210222021 in words is "one hundred eleven billion, two hundred ten million, two hundred twenty-two thousand, twenty-one".