1212431116612 has 24 divisors (see below), whose sum is σ = 2176296255000. Its totient is φ = 590785718016.

The previous prime is 1212431116601. The next prime is 1212431116619. The reversal of 1212431116612 is 2166111342121.

It can be written as a sum of positive squares in 4 ways, for example, as 468480015936 + 743951100676 = 684456^2 + 862526^2 .

It is a super-2 number, since 2×1212431116612² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1212431116619) 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, 19159737 + ... + 19222912.

It is an arithmetic number, because the mean of its divisors is an integer number (90679010625).

Almost surely, 2^{1212431116612} is an apocalyptic number.

It is an amenable number.

1212431116612 is a deficient number, since it is larger than the sum of its proper divisors (963865138388).

1212431116612 is a wasteful number, since it uses less digits than its factorization.

1212431116612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38382855 (or 38382853 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

Adding to 1212431116612 its reverse (2166111342121), we get a palindrome (3378542458733).

The spelling of 1212431116612 in words is "one trillion, two hundred twelve billion, four hundred thirty-one million, one hundred sixteen thousand, six hundred twelve".