23121211020110 has 48 divisors (see below), whose sum is σ = 48414953089440. Its totient is φ = 7926950041920.

The previous prime is 23121211020077. The next prime is 23121211020191. The reversal of 23121211020110 is 1102011212132.

It is a happy number.

It is a super-2 number, since 2×23121211020110² (a number of 28 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 23 ways as a sum of consecutive naturals, for example, 11263520 + ... + 13157100.

It is an arithmetic number, because the mean of its divisors is an integer number (1008644856030).

Almost surely, 2^{23121211020110} is an apocalyptic number.

23121211020110 is an abundant number, since it is smaller than the sum of its proper divisors (25293742069330).

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

23121211020110 is a wasteful number, since it uses less digits than its factorization.

23121211020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918521 (or 1918514 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 23121211020110 its reverse (1102011212132), we get a palindrome (24223222232242).

The spelling of 23121211020110 in words is "twenty-three trillion, one hundred twenty-one billion, two hundred eleven million, twenty thousand, one hundred ten".