2121131004344 has 32 divisors (see below), whose sum is σ = 4439576528640. Its totient is φ = 941728351200.

The previous prime is 2121131004329. The next prime is 2121131004359. The reversal of 2121131004344 is 4434001311212.

It is an interprime number because it is at equal distance from previous prime (2121131004329) and next prime (2121131004359).

It is a super-2 number, since 2×2121131004344² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 280272512 + ... + 280280079.

It is an arithmetic number, because the mean of its divisors is an integer number (138736766520).

Almost surely, 2^{2121131004344} is an apocalyptic number.

It is an amenable number.

2121131004344 is an abundant number, since it is smaller than the sum of its proper divisors (2318445524296).

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

2121131004344 is a wasteful number, since it uses less digits than its factorization.

2121131004344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560552651 (or 560552647 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 2121131004344 its reverse (4434001311212), we get a palindrome (6555132315556).

The spelling of 2121131004344 in words is "two trillion, one hundred twenty-one billion, one hundred thirty-one million, four thousand, three hundred forty-four".