1222231000000 has 98 divisors (see below), whose sum is σ = 3031669475384. Its totient is φ = 488892000000.

The previous prime is 1222230999961. The next prime is 1222231000019. The reversal of 1222231000000 is 1322221.

It is a super-2 number, since 2×1222231000000² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 388885 + ... + 1611115.

Almost surely, 2^{1222231000000} is an apocalyptic number.

1222231000000 is a gapful number since it is divisible by the number (10) 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 1222231000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1515834737692).

1222231000000 is an abundant number, since it is smaller than the sum of its proper divisors (1809438475384).

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

1222231000000 is an frugal number, since it uses more digits than its factorization.

1222231000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222273 (or 1222238 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 1222231000000 its reverse (1322221), we get a palindrome (1222232322221).

The spelling of 1222231000000 in words is "one trillion, two hundred twenty-two billion, two hundred thirty-one million", and thus it is an aban number.