1222151240000 has 140 divisors (see below), whose sum is σ = 3032265614400. Its totient is φ = 488581824000.

The previous prime is 1222151239979. The next prime is 1222151240041. The reversal of 1222151240000 is 421512221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 79152281 + ... + 79167719.

Almost surely, 2^{1222151240000} is an apocalyptic number.

1222151240000 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 1222151240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516132807200).

1222151240000 is an abundant number, since it is smaller than the sum of its proper divisors (1810114374400).

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

1222151240000 is an equidigital number, since it uses as much as digits as its factorization.

1222151240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17450 (or 17425 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 1222151240000 its reverse (421512221), we get a palindrome (1222572752221).

The spelling of 1222151240000 in words is "one trillion, two hundred twenty-two billion, one hundred fifty-one million, two hundred forty thousand".