2121331033124 has 24 divisors (see below), whose sum is σ = 3714173379000. Its totient is φ = 1060138759680.

The previous prime is 2121331033103. The next prime is 2121331033139. The reversal of 2121331033124 is 4213301331212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1319557638400 + 801773394724 = 1148720^2 + 895418^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2121331033093 and 2121331033102.

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, 146807852 + ... + 146822300.

It is an arithmetic number, because the mean of its divisors is an integer number (154757224125).

Almost surely, 2^{2121331033124} is an apocalyptic number.

It is an amenable number.

2121331033124 is a deficient number, since it is larger than the sum of its proper divisors (1592842345876).

2121331033124 is a wasteful number, since it uses less digits than its factorization.

2121331033124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30143 (or 30141 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 2121331033124 its reverse (4213301331212), we get a palindrome (6334632364336).

The spelling of 2121331033124 in words is "two trillion, one hundred twenty-one billion, three hundred thirty-one million, thirty-three thousand, one hundred twenty-four".