1226412013212 has 120 divisors (see below), whose sum is σ = 3376746527616. Its totient is φ = 387375180192.

The previous prime is 1226412013157. The next prime is 1226412013223. The reversal of 1226412013212 is 2123102146221.

1226412013212 is a `hidden beast` number, since 1 + 2 + 2 + 641 + 2 + 0 + 1 + 3 + 2 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 28323 + ... + 1566405.

Almost surely, 2^{1226412013212} is an apocalyptic number.

1226412013212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226412013212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1688373263808).

1226412013212 is an abundant number, since it is smaller than the sum of its proper divisors (2150334514404).

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

1226412013212 is a wasteful number, since it uses less digits than its factorization.

1226412013212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538229 (or 1538218 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 1226412013212 its reverse (2123102146221), we get a palindrome (3349514159433).

The spelling of 1226412013212 in words is "one trillion, two hundred twenty-six billion, four hundred twelve million, thirteen thousand, two hundred twelve".