1021223133012 has 24 divisors (see below), whose sum is σ = 2508267344800. Its totient is φ = 322491515616.

The previous prime is 1021223132929. The next prime is 1021223133019. The reversal of 1021223133012 is 2103313221201.

It is a self number, because there is not a number n which added to its sum of digits gives 1021223133012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021223133019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2239524187 + ... + 2239524642.

Almost surely, 2^{1021223133012} is an apocalyptic number.

1021223133012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021223133012 is an abundant number, since it is smaller than the sum of its proper divisors (1487044211788).

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

1021223133012 is a wasteful number, since it uses less digits than its factorization.

1021223133012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4479048855 (or 4479048853 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1021223133012 its reverse (2103313221201), we get a palindrome (3124536354213).

The spelling of 1021223133012 in words is "one trillion, twenty-one billion, two hundred twenty-three million, one hundred thirty-three thousand, twelve".