1221032130412 has 24 divisors (see below), whose sum is σ = 2276911564704. Its totient is φ = 570943456512.

The previous prime is 1221032130407. The next prime is 1221032130419. The reversal of 1221032130412 is 2140312301221.

It is not an unprimeable number, because it can be changed into a prime (1221032130419) 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, 57175168 + ... + 57196519.

It is an arithmetic number, because the mean of its divisors is an integer number (94871315196).

Almost surely, 2^{1221032130412} is an apocalyptic number.

It is an amenable number.

1221032130412 is a deficient number, since it is larger than the sum of its proper divisors (1055879434292).

1221032130412 is a wasteful number, since it uses less digits than its factorization.

1221032130412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114371865 (or 114371863 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1221032130412 its reverse (2140312301221), we get a palindrome (3361344431633).

The spelling of 1221032130412 in words is "one trillion, two hundred twenty-one billion, thirty-two million, one hundred thirty thousand, four hundred twelve".