1222987409281 has 12 divisors (see below), whose sum is σ = 1387639144192. Its totient is φ = 1075941999000.

The previous prime is 1222987409269. The next prime is 1222987409311. The reversal of 1222987409281 is 1829047892221.

It is not a de Polignac number, because 1222987409281 - 2⁷ = 1222987409153 is a prime.

It is a super-2 number, since 2×1222987409281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222987400281) 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, 163017765 + ... + 163025266.

Almost surely, 2^{1222987409281} is an apocalyptic number.

1222987409281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222987409281 is a deficient number, since it is larger than the sum of its proper divisors (164651734911).

1222987409281 is a wasteful number, since it uses less digits than its factorization.

1222987409281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326043084 (or 326043073 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 1222987409281 in words is "one trillion, two hundred twenty-two billion, nine hundred eighty-seven million, four hundred nine thousand, two hundred eighty-one".