1222200021012 has 24 divisors (see below), whose sum is σ = 2851822248576. Its totient is φ = 407396835648.

The previous prime is 1222200021001. The next prime is 1222200021023. The reversal of 1222200021012 is 2101200022221.

It is an interprime number because it is at equal distance from previous prime (1222200021001) and next prime (1222200021023).

It is a junction number, because it is equal to n+sod(n) for n = 1222200020982 and 1222200021000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1619368 + ... + 2250944.

It is an arithmetic number, because the mean of its divisors is an integer number (118825927024).

Almost surely, 2^{1222200021012} is an apocalyptic number.

1222200021012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222200021012 is an abundant number, since it is smaller than the sum of its proper divisors (1629622227564).

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

1222200021012 is a wasteful number, since it uses less digits than its factorization.

1222200021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792847 (or 792845 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1222200021012 its reverse (2101200022221), we get a palindrome (3323400043233).

The spelling of 1222200021012 in words is "one trillion, two hundred twenty-two billion, two hundred million, twenty-one thousand, twelve".