2122551663667 has 4 divisors (see below), whose sum is σ = 2128093574400. Its totient is φ = 2117009752936.

The previous prime is 2122551663649. The next prime is 2122551663677. The reversal of 2122551663667 is 7663661552212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122551663667 is a prime.

It is a super-3 number, since 3×2122551663667³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122551663677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2770954792 + ... + 2770955557.

It is an arithmetic number, because the mean of its divisors is an integer number (532023393600).

Almost surely, 2^{2122551663667} is an apocalyptic number.

2122551663667 is a deficient number, since it is larger than the sum of its proper divisors (5541910733).

2122551663667 is an equidigital number, since it uses as much as digits as its factorization.

2122551663667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5541910732.

The product of its digits is 5443200, while the sum is 52.

The spelling of 2122551663667 in words is "two trillion, one hundred twenty-two billion, five hundred fifty-one million, six hundred sixty-three thousand, six hundred sixty-seven".