12222135454 has 16 divisors (see below), whose sum is σ = 18954182016. Its totient is φ = 5904691200.

The previous prime is 12222135451. The next prime is 12222135467. The reversal of 12222135454 is 45453122221.

It is a happy number.

It is a super-2 number, since 2×12222135454² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222135451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114027 + ... + 193510.

It is an arithmetic number, because the mean of its divisors is an integer number (1184636376).

Almost surely, 2^12222135454 is an apocalyptic number.

12222135454 is a deficient number, since it is larger than the sum of its proper divisors (6732046562).

12222135454 is a wasteful number, since it uses less digits than its factorization.

12222135454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308211.

The product of its digits is 19200, while the sum is 31.

Adding to 12222135454 its reverse (45453122221), we get a palindrome (57675257675).

It can be divided in two parts, 122221 and 35454, that multiplied together give a palindrome (4333223334).

The spelling of 12222135454 in words is "twelve billion, two hundred twenty-two million, one hundred thirty-five thousand, four hundred fifty-four".