116020921 has 2 divisors, whose sum is σ = 116020922. Its totient is φ = 116020920.

The previous prime is 116020913. The next prime is 116020943. The reversal of 116020921 is 129020611.

It is an a-pointer prime, because the next prime (116020943) can be obtained adding 116020921 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73770921 + 42250000 = 8589^2 + 6500^2 .

It is an emirp because it is prime and its reverse (129020611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 116020921 - 2³ = 116020913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 116020892 and 116020901.

It is not a weakly prime, because it can be changed into another prime (116020721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58010460 + 58010461.

It is an arithmetic number, because the mean of its divisors is an integer number (58010461).

Almost surely, 2^116020921 is an apocalyptic number.

It is an amenable number.

116020921 is a deficient number, since it is larger than the sum of its proper divisors (1).

116020921 is an equidigital number, since it uses as much as digits as its factorization.

116020921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 116020921 is about 10771.3008035242. The cubic root of 116020921 is about 487.7292137975.

The spelling of 116020921 in words is "one hundred sixteen million, twenty thousand, nine hundred twenty-one".