1222211020121 has 64 divisors (see below), whose sum is σ = 1576497807360. Its totient is φ = 921866365440.

The previous prime is 1222211020117. The next prime is 1222211020123. The reversal of 1222211020121 is 1210201122221.

It is a cyclic number.

It is not a de Polignac number, because 1222211020121 - 2² = 1222211020117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222211020121.

It is not an unprimeable number, because it can be changed into a prime (1222211020123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36744920 + ... + 36778166.

It is an arithmetic number, because the mean of its divisors is an integer number (24632778240).

Almost surely, 2^{1222211020121} is an apocalyptic number.

It is an amenable number.

1222211020121 is a deficient number, since it is larger than the sum of its proper divisors (354286787239).

1222211020121 is a wasteful number, since it uses less digits than its factorization.

1222211020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33534.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1222211020121 its reverse (1210201122221), we get a palindrome (2432412142342).

The spelling of 1222211020121 in words is "one trillion, two hundred twenty-two billion, two hundred eleven million, twenty thousand, one hundred twenty-one".