23121034020055 has 16 divisors (see below), whose sum is σ = 27949619728800. Its totient is φ = 18360620069760.

The previous prime is 23121034020043. The next prime is 23121034020109. The reversal of 23121034020055 is 55002043012132.

It is not a de Polignac number, because 23121034020055 - 2²¹ = 23121031922903 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1235341 + ... + 6911449.

It is an arithmetic number, because the mean of its divisors is an integer number (1746851233050).

Almost surely, 2^{23121034020055} is an apocalyptic number.

23121034020055 is a deficient number, since it is larger than the sum of its proper divisors (4828585708745).

23121034020055 is a wasteful number, since it uses less digits than its factorization.

23121034020055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5682114.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 23121034020055 its reverse (55002043012132), we get a palindrome (78123077032187).

The spelling of 23121034020055 in words is "twenty-three trillion, one hundred twenty-one billion, thirty-four million, twenty thousand, fifty-five".