1222130312221 has 24 divisors (see below), whose sum is σ = 1527399656064. Its totient is φ = 957386289600.

The previous prime is 1222130312203. The next prime is 1222130312231.

1222130312221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1222130312221 - 2³⁵ = 1187770573853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222130312192 and 1222130312201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222130312231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4994761 + ... + 5233726.

It is an arithmetic number, because the mean of its divisors is an integer number (63641652336).

Almost surely, 2^{1222130312221} is an apocalyptic number.

It is an amenable number.

1222130312221 is a deficient number, since it is larger than the sum of its proper divisors (305269343843).

1222130312221 is a wasteful number, since it uses less digits than its factorization.

1222130312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10228621 (or 10228608 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Multiplying 1222130312221 by its sum of digits (22), we get a palindrome (26886866868862).

It can be divided in two parts, 1222130 and 312221, that added together give a palindrome (1534351).

The spelling of 1222130312221 in words is "one trillion, two hundred twenty-two billion, one hundred thirty million, three hundred twelve thousand, two hundred twenty-one".