112111201921 has 2 divisors, whose sum is σ = 112111201922. Its totient is φ = 112111201920.

The previous prime is 112111201903. The next prime is 112111201927. The reversal of 112111201921 is 129102111211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89826683521 + 22284518400 = 299711^2 + 149280^2 .

It is a cyclic number.

It is not a de Polignac number, because 112111201921 - 2¹⁷ = 112111070849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 112111201892 and 112111201901.

It is not a weakly prime, because it can be changed into another prime (112111201927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56055600960 + 56055600961.

It is an arithmetic number, because the mean of its divisors is an integer number (56055600961).

Almost surely, 2^112111201921 is an apocalyptic number.

It is an amenable number.

112111201921 is a deficient number, since it is larger than the sum of its proper divisors (1).

112111201921 is an equidigital number, since it uses as much as digits as its factorization.

112111201921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 112111201921 in words is "one hundred twelve billion, one hundred eleven million, two hundred one thousand, nine hundred twenty-one".