23121036445 has 32 divisors (see below), whose sum is σ = 31531207680. Its totient is φ = 16134681600.

The previous prime is 23121036437. The next prime is 23121036457. The reversal of 23121036445 is 54463012132.

It is not a de Polignac number, because 23121036445 - 2³ = 23121036437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 471892 + ... + 518578.

It is an arithmetic number, because the mean of its divisors is an integer number (985350240).

Almost surely, 2^23121036445 is an apocalyptic number.

It is an amenable number.

23121036445 is a deficient number, since it is larger than the sum of its proper divisors (8410171235).

23121036445 is a wasteful number, since it uses less digits than its factorization.

23121036445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47125.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 23121036445 its reverse (54463012132), we get a palindrome (77584048577).

The spelling of 23121036445 in words is "twenty-three billion, one hundred twenty-one million, thirty-six thousand, four hundred forty-five".