121043550436 has 12 divisors (see below), whose sum is σ = 212705161900. Its totient is φ = 60270647040.

The previous prime is 121043550413. The next prime is 121043550443. The reversal of 121043550436 is 634055340121.

It can be written as a sum of positive squares in 2 ways, for example, as 30499129600 + 90544420836 = 174640^2 + 300906^2 .

It is a super-2 number, since 2×121043550436² (a number of 23 digits) contains 22 as substring.

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, 62780961 + ... + 62782888.

Almost surely, 2^121043550436 is an apocalyptic number.

It is an amenable number.

121043550436 is a deficient number, since it is larger than the sum of its proper divisors (91661611464).

121043550436 is a wasteful number, since it uses less digits than its factorization.

121043550436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125564094 (or 125564092 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 121043550436 its reverse (634055340121), we get a palindrome (755098890557).

The spelling of 121043550436 in words is "one hundred twenty-one billion, forty-three million, five hundred fifty thousand, four hundred thirty-six".