1222131121000 has 64 divisors (see below), whose sum is σ = 2902470367680. Its totient is φ = 481556116800.

The previous prime is 1222131120989. The next prime is 1222131121049. The reversal of 1222131121000 is 1211312221.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9053382 + ... + 9187381.

It is an arithmetic number, because the mean of its divisors is an integer number (45351099495).

Almost surely, 2^{1222131121000} is an apocalyptic number.

1222131121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222131121000 is an abundant number, since it is smaller than the sum of its proper divisors (1680339246680).

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

1222131121000 is a wasteful number, since it uses less digits than its factorization.

1222131121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18240851 (or 18240837 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1222131121000 its reverse (1211312221), we get a palindrome (1223342433221).

The spelling of 1222131121000 in words is "one trillion, two hundred twenty-two billion, one hundred thirty-one million, one hundred twenty-one thousand".