1222131120989 has 2 divisors, whose sum is σ = 1222131120990. Its totient is φ = 1222131120988.

The previous prime is 1222131120923. The next prime is 1222131121049. The reversal of 1222131120989 is 9890211312221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 831849795364 + 390281325625 = 912058^2 + 624725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222131120989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222131125989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611065560494 + 611065560495.

It is an arithmetic number, because the mean of its divisors is an integer number (611065560495).

Almost surely, 2^{1222131120989} is an apocalyptic number.

It is an amenable number.

1222131120989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222131120989 is an equidigital number, since it uses as much as digits as its factorization.

1222131120989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 41.

The spelling of 1222131120989 in words is "one trillion, two hundred twenty-two billion, one hundred thirty-one million, one hundred twenty thousand, nine hundred eighty-nine".