1021321132212 has 12 divisors (see below), whose sum is σ = 2383082641856. Its totient is φ = 340440377400.

The previous prime is 1021321132211. The next prime is 1021321132213. The reversal of 1021321132212 is 2122311231201.

It is an interprime number because it is at equal distance from previous prime (1021321132211) and next prime (1021321132213).

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 (1021321132211) 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, 42555047164 + ... + 42555047187.

Almost surely, 2^{1021321132212} is an apocalyptic number.

1021321132212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021321132212 is an abundant number, since it is smaller than the sum of its proper divisors (1361761509644).

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

1021321132212 is a wasteful number, since it uses less digits than its factorization.

1021321132212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85110094358 (or 85110094356 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1021321132212 its reverse (2122311231201), we get a palindrome (3143632363413).

The spelling of 1021321132212 in words is "one trillion, twenty-one billion, three hundred twenty-one million, one hundred thirty-two thousand, two hundred twelve".