2123521143044 has 24 divisors (see below), whose sum is σ = 4247088689088. Its totient is φ = 910070546400.

The previous prime is 2123521142921. The next prime is 2123521143049. The reversal of 2123521143044 is 4403411253212.

It is a self number, because there is not a number n which added to its sum of digits gives 2123521143044.

It is not an unprimeable number, because it can be changed into a prime (2123521143049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2571719 + ... + 3295569.

It is an arithmetic number, because the mean of its divisors is an integer number (176962028712).

Almost surely, 2^{2123521143044} is an apocalyptic number.

It is an amenable number.

2123521143044 is an abundant number, since it is smaller than the sum of its proper divisors (2123567546044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123521143044 is a wasteful number, since it uses less digits than its factorization.

2123521143044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828635 (or 828633 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 2123521143044 its reverse (4403411253212), we get a palindrome (6526932396256).

The spelling of 2123521143044 in words is "two trillion, one hundred twenty-three billion, five hundred twenty-one million, one hundred forty-three thousand, forty-four".