1212497321144 has 16 divisors (see below), whose sum is σ = 2407163799600. Its totient is φ = 570586974592.

The previous prime is 1212497321099. The next prime is 1212497321183. The reversal of 1212497321144 is 4411237942121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4457710604 + ... + 4457710875.

It is an arithmetic number, because the mean of its divisors is an integer number (150447737475).

Almost surely, 2^{1212497321144} is an apocalyptic number.

It is an amenable number.

1212497321144 is a deficient number, since it is larger than the sum of its proper divisors (1194666478456).

1212497321144 is a wasteful number, since it uses less digits than its factorization.

1212497321144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8915421502 (or 8915421498 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The spelling of 1212497321144 in words is "one trillion, two hundred twelve billion, four hundred ninety-seven million, three hundred twenty-one thousand, one hundred forty-four".