1222001020121 has 24 divisors (see below), whose sum is σ = 1426282064064. Its totient is φ = 1043920029600.

The previous prime is 1222001020111. The next prime is 1222001020129. The reversal of 1222001020121 is 1210201002221.

It is not a de Polignac number, because 1222001020121 - 2²² = 1221996825817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222001020096 and 1222001020105.

It is not an unprimeable number, because it can be changed into a prime (1222001020129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17930516 + ... + 17998538.

It is an arithmetic number, because the mean of its divisors is an integer number (59428419336).

Almost surely, 2^{1222001020121} is an apocalyptic number.

It is an amenable number.

1222001020121 is a deficient number, since it is larger than the sum of its proper divisors (204281043943).

1222001020121 is an equidigital number, since it uses as much as digits as its factorization.

1222001020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69261 (or 69254 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1222001020121 its reverse (1210201002221), we get a palindrome (2432202022342).

The spelling of 1222001020121 in words is "one trillion, two hundred twenty-two billion, one million, twenty thousand, one hundred twenty-one".