111021100023 has 8 divisors (see below), whose sum is σ = 149008452736. Its totient is φ = 73523907000.

The previous prime is 111021099979. The next prime is 111021100033. The reversal of 111021100023 is 320001120111.

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

It is not a de Polignac number, because 111021100023 - 2²² = 111016905719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111021099981 and 111021100008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111021100033) 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, 122539393 + ... + 122540298.

It is an arithmetic number, because the mean of its divisors is an integer number (18626056592).

Almost surely, 2^111021100023 is an apocalyptic number.

111021100023 is a deficient number, since it is larger than the sum of its proper divisors (37987352713).

111021100023 is a wasteful number, since it uses less digits than its factorization.

111021100023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245079845.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 111021100023 its reverse (320001120111), we get a palindrome (431022220134).

The spelling of 111021100023 in words is "one hundred eleven billion, twenty-one million, one hundred thousand, twenty-three".