122221999999 has 16 divisors (see below), whose sum is σ = 136869917184. Its totient is φ = 108180072000.

The previous prime is 122221999993. The next prime is 122222000009. The reversal of 122221999999 is 999999122221.

It is not a de Polignac number, because 122221999999 - 2²⁹ = 121685129087 is a prime.

It is a super-4 number, since 4×122221999999⁴ (a number of 45 digits) contains 4444 as substring.

122221999999 is a modest number, since divided by 999999 gives 122221 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 122221999999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221999993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264727 + ... + 560824.

It is an arithmetic number, because the mean of its divisors is an integer number (8554369824).

Almost surely, 2^122221999999 is an apocalyptic number.

122221999999 is a deficient number, since it is larger than the sum of its proper divisors (14647917185).

122221999999 is a wasteful number, since it uses less digits than its factorization.

122221999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825918.

The product of its digits is 8503056, while the sum is 64.

The spelling of 122221999999 in words is "one hundred twenty-two billion, two hundred twenty-one million, nine hundred ninety-nine thousand, nine hundred ninety-nine".