122221999993 has 2 divisors, whose sum is σ = 122221999994. Its totient is φ = 122221999992.

The previous prime is 122221999973. The next prime is 122222000009. The reversal of 122221999993 is 399999122221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73534253584 + 48687746409 = 271172^2 + 220653^2 .

It is a cyclic number.

It is not a de Polignac number, because 122221999993 - 2⁵ = 122221999961 is a prime.

It is not a weakly prime, because it can be changed into another prime (122221999943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110999996 + 61110999997.

It is an arithmetic number, because the mean of its divisors is an integer number (61110999997).

Almost surely, 2^122221999993 is an apocalyptic number.

It is an amenable number.

122221999993 is a deficient number, since it is larger than the sum of its proper divisors (1).

122221999993 is an equidigital number, since it uses as much as digits as its factorization.

122221999993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2834352, while the sum is 58.

The spelling of 122221999993 in words is "one hundred twenty-two billion, two hundred twenty-one million, nine hundred ninety-nine thousand, nine hundred ninety-three".