1230221013312 has 112 divisors (see below), whose sum is σ = 3488276967552. Its totient is φ = 381643130880.

The previous prime is 1230221013283. The next prime is 1230221013313. The reversal of 1230221013312 is 2133101220321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230221013313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3601239 + ... + 3928022.

Almost surely, 2^{1230221013312} is an apocalyptic number.

1230221013312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1230221013312 is an abundant number, since it is smaller than the sum of its proper divisors (2258055954240).

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

1230221013312 is a wasteful number, since it uses less digits than its factorization.

1230221013312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7529336 (or 7529326 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1230221013312 its reverse (2133101220321), we get a palindrome (3363322233633).

The spelling of 1230221013312 in words is "one trillion, two hundred thirty billion, two hundred twenty-one million, thirteen thousand, three hundred twelve".