1222345677889 has 32 divisors (see below), whose sum is σ = 1430290400000. Its totient is φ = 1044191699712.

The previous prime is 1222345677887. The next prime is 1222345677913. The reversal of 1222345677889 is 9887765432221.

It is not a de Polignac number, because 1222345677889 - 2¹ = 1222345677887 is a prime.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1222345677889.

It is not an unprimeable number, because it can be changed into a prime (1222345677887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158762962 + ... + 158770660.

It is an arithmetic number, because the mean of its divisors is an integer number (44696575000).

Almost surely, 2^{1222345677889} is an apocalyptic number.

It is an amenable number.

1222345677889 is a deficient number, since it is larger than the sum of its proper divisors (207944722111).

1222345677889 is an equidigital number, since it uses as much as digits as its factorization.

1222345677889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9222 (or 9208 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 64.

The spelling of 1222345677889 in words is "one trillion, two hundred twenty-two billion, three hundred forty-five million, six hundred seventy-seven thousand, eight hundred eighty-nine".