121143622436 has 12 divisors (see below), whose sum is σ = 212012494428. Its totient is φ = 60568624032.

The previous prime is 121143622367. The next prime is 121143622493. The reversal of 121143622436 is 634226341121.

It can be written as a sum of positive squares in 2 ways, for example, as 9427244836 + 111716377600 = 97094^2 + 334240^2 .

It is a super-3 number, since 3×121143622436³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 121143622396 and 121143622405.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 710231 + ... + 864126.

It is an arithmetic number, because the mean of its divisors is an integer number (17667707869).

Almost surely, 2^121143622436 is an apocalyptic number.

It is an amenable number.

121143622436 is a deficient number, since it is larger than the sum of its proper divisors (90868871992).

121143622436 is a wasteful number, since it uses less digits than its factorization.

121143622436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593598 (or 1593596 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

Adding to 121143622436 its reverse (634226341121), we get a palindrome (755369963557).

The spelling of 121143622436 in words is "one hundred twenty-one billion, one hundred forty-three million, six hundred twenty-two thousand, four hundred thirty-six".