111012200210021 has 4 divisors (see below), whose sum is σ = 121104218410944. Its totient is φ = 100920182009100.

The previous prime is 111012200210017. The next prime is 111012200210053. The reversal of 111012200210021 is 120012002210111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111012200210021 - 2² = 111012200210017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111012200209978 and 111012200210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012200210081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5046009100445 + ... + 5046009100466.

It is an arithmetic number, because the mean of its divisors is an integer number (30276054602736).

Almost surely, 2^{111012200210021} is an apocalyptic number.

111012200210021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111012200210021 is a deficient number, since it is larger than the sum of its proper divisors (10092018200923).

111012200210021 is a wasteful number, since it uses less digits than its factorization.

111012200210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10092018200922.

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

Adding to 111012200210021 its reverse (120012002210111), we get a palindrome (231024202420132).

The spelling of 111012200210021 in words is "one hundred eleven trillion, twelve billion, two hundred million, two hundred ten thousand, twenty-one".