121222199968 has 24 divisors (see below), whose sum is σ = 243734000832. Its totient is φ = 59321501376.

The previous prime is 121222199963. The next prime is 121222199971. The reversal of 121222199968 is 869991222121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121222199963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40298430 + ... + 40301437.

It is an arithmetic number, because the mean of its divisors is an integer number (10155583368).

Almost surely, 2^121222199968 is an apocalyptic number.

It is an amenable number.

121222199968 is an abundant number, since it is smaller than the sum of its proper divisors (122511800864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121222199968 is an equidigital number, since it uses as much as digits as its factorization.

121222199968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80599924 (or 80599916 counting only the distinct ones).

The product of its digits is 559872, while the sum is 52.

The spelling of 121222199968 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred ninety-nine thousand, nine hundred sixty-eight".