111350200021 has 2 divisors, whose sum is σ = 111350200022. Its totient is φ = 111350200020.

The previous prime is 111350200007. The next prime is 111350200043. The reversal of 111350200021 is 120002053111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109422024100 + 1928175921 = 330790^2 + 43911^2 .

It is an emirp because it is prime and its reverse (120002053111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111350200021 - 2¹³ = 111350191829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111350199968 and 111350200004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111350290021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55675100010 + 55675100011.

It is an arithmetic number, because the mean of its divisors is an integer number (55675100011).

Almost surely, 2^111350200021 is an apocalyptic number.

It is an amenable number.

111350200021 is a deficient number, since it is larger than the sum of its proper divisors (1).

111350200021 is an equidigital number, since it uses as much as digits as its factorization.

111350200021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 111350200021 its reverse (120002053111), we get a palindrome (231352253132).

The spelling of 111350200021 in words is "one hundred eleven billion, three hundred fifty million, two hundred thousand, twenty-one".