1222201100121 has 8 divisors (see below), whose sum is σ = 1632947673024. Its totient is φ = 813127630320.

The previous prime is 1222201100117. The next prime is 1222201100147. The reversal of 1222201100121 is 1210011022221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222201100121 - 2² = 1222201100117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222201100121.

It is not an unprimeable number, because it can be changed into a prime (1222201100191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418274070 + ... + 418276991.

It is an arithmetic number, because the mean of its divisors is an integer number (204118459128).

Almost surely, 2^{1222201100121} is an apocalyptic number.

It is an amenable number.

1222201100121 is a deficient number, since it is larger than the sum of its proper divisors (410746572903).

1222201100121 is an equidigital number, since it uses as much as digits as its factorization.

1222201100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836551551.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1222201100121 its reverse (1210011022221), we get a palindrome (2432212122342).

The spelling of 1222201100121 in words is "one trillion, two hundred twenty-two billion, two hundred one million, one hundred thousand, one hundred twenty-one".