1121621546635 has 32 divisors (see below), whose sum is σ = 1395343091520. Its totient is φ = 864831356928.

The previous prime is 1121621546587. The next prime is 1121621546699. The reversal of 1121621546635 is 5366451261211.

It is a cyclic number.

It is not a de Polignac number, because 1121621546635 - 2³⁹ = 571865732747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121621546591 and 1121621546600.

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 31 ways as a sum of consecutive naturals, for example, 39475344 + ... + 39503746.

It is an arithmetic number, because the mean of its divisors is an integer number (43604471610).

Almost surely, 2^{1121621546635} is an apocalyptic number.

1121621546635 is a deficient number, since it is larger than the sum of its proper divisors (273721544885).

1121621546635 is a wasteful number, since it uses less digits than its factorization.

1121621546635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30447.

The product of its digits is 259200, while the sum is 43.

The spelling of 1121621546635 in words is "one trillion, one hundred twenty-one billion, six hundred twenty-one million, five hundred forty-six thousand, six hundred thirty-five".