1022221121012 has 24 divisors (see below), whose sum is σ = 2201707030656. Its totient is φ = 404395168608.

The previous prime is 1022221120979. The next prime is 1022221121029. The reversal of 1022221121012 is 2101211222201.

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, 1404149528 + ... + 1404150255.

It is an arithmetic number, because the mean of its divisors is an integer number (91737792944).

Almost surely, 2^{1022221121012} is an apocalyptic number.

It is an amenable number.

1022221121012 is an abundant number, since it is smaller than the sum of its proper divisors (1179485909644).

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

1022221121012 is a wasteful number, since it uses less digits than its factorization.

1022221121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808299807 (or 2808299805 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1022221121012 its reverse (2101211222201), we get a palindrome (3123432343213).

The spelling of 1022221121012 in words is "one trillion, twenty-two billion, two hundred twenty-one million, one hundred twenty-one thousand, twelve".