12022115555 has 4 divisors (see below), whose sum is σ = 14426538672. Its totient is φ = 9617692440.

The previous prime is 12022115527. The next prime is 12022115563. The reversal of 12022115555 is 55551122021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55551122021 = 241 ⋅230502581.

It is not a de Polignac number, because 12022115555 - 2⁶ = 12022115491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1202211551 + ... + 1202211560.

It is an arithmetic number, because the mean of its divisors is an integer number (3606634668).

Almost surely, 2^12022115555 is an apocalyptic number.

12022115555 is a deficient number, since it is larger than the sum of its proper divisors (2404423117).

12022115555 is an equidigital number, since it uses as much as digits as its factorization.

12022115555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404423116.

The product of its (nonzero) digits is 5000, while the sum is 29.

Adding to 12022115555 its reverse (55551122021), we get a palindrome (67573237576).

The spelling of 12022115555 in words is "twelve billion, twenty-two million, one hundred fifteen thousand, five hundred fifty-five".