20112221310 has 16 divisors (see below), whose sum is σ = 48269331216. Its totient is φ = 5363259008.

The previous prime is 20112221293. The next prime is 20112221351. The reversal of 20112221310 is 1312221102.

It is a super-2 number, since 2×20112221310² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20112221310.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335203659 + ... + 335203718.

It is an arithmetic number, because the mean of its divisors is an integer number (3016833201).

Almost surely, 2^20112221310 is an apocalyptic number.

20112221310 is an abundant number, since it is smaller than the sum of its proper divisors (28157109906).

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

20112221310 is a wasteful number, since it uses less digits than its factorization.

20112221310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670407387.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20112221310 its reverse (1312221102), we get a palindrome (21424442412).

The spelling of 20112221310 in words is "twenty billion, one hundred twelve million, two hundred twenty-one thousand, three hundred ten".