2220161111989 has 2 divisors, whose sum is σ = 2220161111990. Its totient is φ = 2220161111988.

The previous prime is 2220161111921. The next prime is 2220161112047. The reversal of 2220161111989 is 9891111610222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1518235515889 + 701925596100 = 1232167^2 + 837810^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220161111989 - 2³³ = 2211571177397 is a prime.

It is a super-2 number, since 2×2220161111989² (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 (2220161111489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110080555994 + 1110080555995.

It is an arithmetic number, because the mean of its divisors is an integer number (1110080555995).

Almost surely, 2^{2220161111989} is an apocalyptic number.

It is an amenable number.

2220161111989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220161111989 is an equidigital number, since it uses as much as digits as its factorization.

2220161111989 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 43.

The spelling of 2220161111989 in words is "two trillion, two hundred twenty billion, one hundred sixty-one million, one hundred eleven thousand, nine hundred eighty-nine".