23111221213110 has 48 divisors (see below), whose sum is σ = 56786858013744. Its totient is φ = 6019666906176.

The previous prime is 23111221213063. The next prime is 23111221213121. The reversal of 23111221213110 is 1131212211132.

It is a super-2 number, since 2×23111221213110² (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, 208266337 + ... + 208377276.

It is an arithmetic number, because the mean of its divisors is an integer number (1183059541953).

Almost surely, 2^{23111221213110} is an apocalyptic number.

23111221213110 is an abundant number, since it is smaller than the sum of its proper divisors (33675636800634).

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

23111221213110 is a wasteful number, since it uses less digits than its factorization.

23111221213110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416643709 (or 416643666 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 23111221213110 its reverse (1131212211132), we get a palindrome (24242433424242).

The spelling of 23111221213110 in words is "twenty-three trillion, one hundred eleven billion, two hundred twenty-one million, two hundred thirteen thousand, one hundred ten".