20123221310 has 16 divisors (see below), whose sum is σ = 36242563536. Its totient is φ = 8044674048.

The previous prime is 20123221297. The next prime is 20123221319. The reversal of 20123221310 is 1312232102.

It is a super-2 number, since 2×20123221310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123221319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558467 + ... + 593406.

It is an arithmetic number, because the mean of its divisors is an integer number (2265160221).

Almost surely, 2^20123221310 is an apocalyptic number.

20123221310 is a deficient number, since it is larger than the sum of its proper divisors (16119342226).

20123221310 is a wasteful number, since it uses less digits than its factorization.

20123221310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153627.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20123221310 its reverse (1312232102), we get a palindrome (21435453412).

The spelling of 20123221310 in words is "twenty billion, one hundred twenty-three million, two hundred twenty-one thousand, three hundred ten".