1222666167721 has 16 divisors (see below), whose sum is σ = 1241964638208. Its totient is φ = 1203523272000.

The previous prime is 1222666167703. The next prime is 1222666167799. The reversal of 1222666167721 is 1277616662221.

It is not a de Polignac number, because 1222666167721 - 2¹⁷ = 1222666036649 is a prime.

It is a super-3 number, since 3×1222666167721³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222666167221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17014056 + ... + 17085766.

It is an arithmetic number, because the mean of its divisors is an integer number (77622789888).

Almost surely, 2^{1222666167721} is an apocalyptic number.

It is an amenable number.

1222666167721 is a deficient number, since it is larger than the sum of its proper divisors (19298470487).

1222666167721 is a wasteful number, since it uses less digits than its factorization.

1222666167721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72792.

The product of its digits is 1016064, while the sum is 49.

The spelling of 1222666167721 in words is "one trillion, two hundred twenty-two billion, six hundred sixty-six million, one hundred sixty-seven thousand, seven hundred twenty-one".