1236144212226 has 48 divisors (see below), whose sum is σ = 3339194758848. Its totient is φ = 321076418400.

The previous prime is 1236144212159. The next prime is 1236144212287. The reversal of 1236144212226 is 6222124416321.

1236144212226 is a `hidden beast` number, since 1 + 2 + 3 + 6 + 1 + 4 + 421 + 2 + 226 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 445938085 + ... + 445940856.

It is an arithmetic number, because the mean of its divisors is an integer number (69566557476).

Almost surely, 2^{1236144212226} is an apocalyptic number.

1236144212226 is an abundant number, since it is smaller than the sum of its proper divisors (2103050546622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1236144212226 is a wasteful number, since it uses less digits than its factorization.

1236144212226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891878967 (or 891878964 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

Adding to 1236144212226 its reverse (6222124416321), we get a palindrome (7458268628547).

The spelling of 1236144212226 in words is "one trillion, two hundred thirty-six billion, one hundred forty-four million, two hundred twelve thousand, two hundred twenty-six".