1230202321212 has 24 divisors (see below), whose sum is σ = 2995275217536. Its totient is φ = 392238421168.

The previous prime is 1230202321211. The next prime is 1230202321241. The reversal of 1230202321212 is 2121232020321.

It is a super-2 number, since 2×1230202321212² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230202321211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2228627118 + ... + 2228627669.

It is an arithmetic number, because the mean of its divisors is an integer number (124803134064).

Almost surely, 2^{1230202321212} is an apocalyptic number.

1230202321212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1230202321212 is an abundant number, since it is smaller than the sum of its proper divisors (1765072896324).

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

1230202321212 is a wasteful number, since it uses less digits than its factorization.

1230202321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4457254817 (or 4457254815 counting only the distinct ones).

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

Adding to 1230202321212 its reverse (2121232020321), we get a palindrome (3351434341533).

The spelling of 1230202321212 in words is "one trillion, two hundred thirty billion, two hundred two million, three hundred twenty-one thousand, two hundred twelve".