1222112209977 has 12 divisors (see below), whose sum is σ = 1765288326100. Its totient is φ = 814734488448.

The previous prime is 1222112209943. The next prime is 1222112210029. The reversal of 1222112209977 is 7799022112221.

1222112209977 is a `hidden beast` number, since 122 + 211 + 220 + 9 + 97 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 830906994681 + 391205215296 = 911541^2 + 625464^2 .

It is not a de Polignac number, because 1222112209977 - 2¹⁴ = 1222112193593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222112209477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 667149 + ... + 1699797.

Almost surely, 2^{1222112209977} is an apocalyptic number.

It is an amenable number.

1222112209977 is a deficient number, since it is larger than the sum of its proper divisors (543176116123).

1222112209977 is a wasteful number, since it uses less digits than its factorization.

1222112209977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164152 (or 1164149 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 1222112209977 in words is "one trillion, two hundred twenty-two billion, one hundred twelve million, two hundred nine thousand, nine hundred seventy-seven".