1001222100012 has 48 divisors (see below), whose sum is σ = 2393608250880. Its totient is φ = 325557451968.

The previous prime is 1001222099993. The next prime is 1001222100037. The reversal of 1001222100012 is 2100012221001.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 856212 + ... + 1653947.

It is an arithmetic number, because the mean of its divisors is an integer number (49866838560).

Almost surely, 2^{1001222100012} is an apocalyptic number.

1001222100012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001222100012 is an abundant number, since it is smaller than the sum of its proper divisors (1392386150868).

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

1001222100012 is a wasteful number, since it uses less digits than its factorization.

1001222100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510982 (or 2510980 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1001222100012 its reverse (2100012221001), we get a palindrome (3101234321013).

The spelling of 1001222100012 in words is "one trillion, one billion, two hundred twenty-two million, one hundred thousand, twelve".