2120121423004 has 96 divisors (see below), whose sum is σ = 4145244768000. Its totient is φ = 942071510016.

The previous prime is 2120121423001. The next prime is 2120121423019. The reversal of 2120121423004 is 4003241210212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120121423001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1185086542 + ... + 1185088330.

It is an arithmetic number, because the mean of its divisors is an integer number (43179633000).

Almost surely, 2^{2120121423004} is an apocalyptic number.

It is an amenable number.

2120121423004 is a deficient number, since it is larger than the sum of its proper divisors (2025123344996).

2120121423004 is a wasteful number, since it uses less digits than its factorization.

2120121423004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3647 (or 3645 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 2120121423004 its reverse (4003241210212), we get a palindrome (6123362633216).

The spelling of 2120121423004 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, four hundred twenty-three thousand, four".