1230022221312 has 160 divisors (see below), whose sum is σ = 3450630395520. Its totient is φ = 388280770560.

The previous prime is 1230022221277. The next prime is 1230022221319. The reversal of 1230022221312 is 2131222200321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230022221319) 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, 97205578 + ... + 97218230.

It is an arithmetic number, because the mean of its divisors is an integer number (21566439972).

Almost surely, 2^{1230022221312} is an apocalyptic number.

1230022221312 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 1230022221312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725315197760).

1230022221312 is an abundant number, since it is smaller than the sum of its proper divisors (2220608174208).

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

1230022221312 is a wasteful number, since it uses less digits than its factorization.

1230022221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16024 (or 16008 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1230022221312 its reverse (2131222200321), we get a palindrome (3361244421633).

The spelling of 1230022221312 in words is "one trillion, two hundred thirty billion, twenty-two million, two hundred twenty-one thousand, three hundred twelve".