1022023321212 has 12 divisors (see below), whose sum is σ = 2384721082856. Its totient is φ = 340674440400.

The previous prime is 1022023321211. The next prime is 1022023321243. The reversal of 1022023321212 is 2121233202201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022023321211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42584305039 + ... + 42584305062.

Almost surely, 2^{1022023321212} is an apocalyptic number.

1022023321212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1022023321212 is an abundant number, since it is smaller than the sum of its proper divisors (1362697761644).

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

1022023321212 is a wasteful number, since it uses less digits than its factorization.

1022023321212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85168610108 (or 85168610106 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1022023321212 its reverse (2121233202201), we get a palindrome (3143256523413).

The spelling of 1022023321212 in words is "one trillion, twenty-two billion, twenty-three million, three hundred twenty-one thousand, two hundred twelve".