1220222219989 has 2 divisors, whose sum is σ = 1220222219990. Its totient is φ = 1220222219988.

The previous prime is 1220222219959. The next prime is 1220222220031. The reversal of 1220222219989 is 9899122220221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1146120124900 + 74102095089 = 1070570^2 + 272217^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220222219989 - 2³⁷ = 1082783266517 is a prime.

It is a super-2 number, since 2×1220222219989² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220222219959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610111109994 + 610111109995.

It is an arithmetic number, because the mean of its divisors is an integer number (610111109995).

Almost surely, 2^{1220222219989} is an apocalyptic number.

It is an amenable number.

1220222219989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220222219989 is an equidigital number, since it uses as much as digits as its factorization.

1220222219989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 49.

The spelling of 1220222219989 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred nineteen thousand, nine hundred eighty-nine".