2121232404044 has 24 divisors (see below), whose sum is σ = 4171520582880. Its totient is φ = 936463803264.

The previous prime is 2121232404029. The next prime is 2121232404133. The reversal of 2121232404044 is 4404042321212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2121232403998 and 2121232404016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 886801649 + ... + 886804040.

It is an arithmetic number, because the mean of its divisors is an integer number (173813357620).

Almost surely, 2^{2121232404044} is an apocalyptic number.

It is an amenable number.

2121232404044 is a deficient number, since it is larger than the sum of its proper divisors (2050288178836).

2121232404044 is a wasteful number, since it uses less digits than its factorization.

2121232404044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773605729 (or 1773605727 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 2121232404044 its reverse (4404042321212), we get a palindrome (6525274725256).

The spelling of 2121232404044 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-two million, four hundred four thousand, forty-four".