111002120212021 has 4 divisors (see below), whose sum is σ = 111666803566752. Its totient is φ = 110337436857292.

The previous prime is 111002120211971. The next prime is 111002120212031. The reversal of 111002120212021 is 120212021200111.

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 111002120212021 - 2⁹ = 111002120211509 is a prime.

It is a super-2 number, since 2×111002120212021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111002120211986 and 111002120212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111002120212031) 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, 332341677115 + ... + 332341677448.

It is an arithmetic number, because the mean of its divisors is an integer number (27916700891688).

Almost surely, 2^{111002120212021} is an apocalyptic number.

It is an amenable number.

111002120212021 is a deficient number, since it is larger than the sum of its proper divisors (664683354731).

111002120212021 is an equidigital number, since it uses as much as digits as its factorization.

111002120212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664683354730.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111002120212021 its reverse (120212021200111), we get a palindrome (231214141412132).

The spelling of 111002120212021 in words is "one hundred eleven trillion, two billion, one hundred twenty million, two hundred twelve thousand, twenty-one".