23121004240402 has 16 divisors (see below), whose sum is σ = 34864925889024. Its totient is φ = 11499368670000.

The previous prime is 23121004240343. The next prime is 23121004240421. The reversal of 23121004240402 is 20404240012132.

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, 5688952 + ... + 8866012.

It is an arithmetic number, because the mean of its divisors is an integer number (2179057868064).

Almost surely, 2^{23121004240402} is an apocalyptic number.

23121004240402 is a deficient number, since it is larger than the sum of its proper divisors (11743921648622).

23121004240402 is a wasteful number, since it uses less digits than its factorization.

23121004240402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196305.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 23121004240402 its reverse (20404240012132), we get a palindrome (43525244252534).

The spelling of 23121004240402 in words is "twenty-three trillion, one hundred twenty-one billion, four million, two hundred forty thousand, four hundred two".