1012121587724 has 24 divisors (see below), whose sum is σ = 1907597255760. Its totient is φ = 467099406144.

The previous prime is 1012121587723. The next prime is 1012121587739. The reversal of 1012121587724 is 4277851212101.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1012121587723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35807 + ... + 1423209.

It is an arithmetic number, because the mean of its divisors is an integer number (79483218990).

Almost surely, 2^{1012121587724} is an apocalyptic number.

It is an amenable number.

1012121587724 is a deficient number, since it is larger than the sum of its proper divisors (895475668036).

1012121587724 is a wasteful number, since it uses less digits than its factorization.

1012121587724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401449 (or 1401447 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 41.

Adding to 1012121587724 its reverse (4277851212101), we get a palindrome (5289972799825).

The spelling of 1012121587724 in words is "one trillion, twelve billion, one hundred twenty-one million, five hundred eighty-seven thousand, seven hundred twenty-four".