20122022312 has 64 divisors (see below), whose sum is σ = 44247772800. Its totient is φ = 8398632960.

The previous prime is 20122022311. The next prime is 20122022321. The reversal of 20122022312 is 21322022102.

It is not an unprimeable number, because it can be changed into a prime (20122022311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1354139 + ... + 1368917.

It is an arithmetic number, because the mean of its divisors is an integer number (691371450).

Almost surely, 2^20122022312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20122022312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22123886400).

20122022312 is an abundant number, since it is smaller than the sum of its proper divisors (24125750488).

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

20122022312 is a wasteful number, since it uses less digits than its factorization.

20122022312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15426 (or 15422 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20122022312 its reverse (21322022102), we get a palindrome (41444044414).

The spelling of 20122022312 in words is "twenty billion, one hundred twenty-two million, twenty-two thousand, three hundred twelve".