20322103212 has 72 divisors (see below), whose sum is σ = 54585537552. Its totient is φ = 6352819200.

The previous prime is 20322103199. The next prime is 20322103223. The reversal of 20322103212 is 21230122302.

20322103212 is a `hidden beast` number, since 20 + 322 + 1 + 0 + 321 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 112887 + ... + 231057.

It is an arithmetic number, because the mean of its divisors is an integer number (758132466).

Almost surely, 2^20322103212 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 20322103212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27292768776).

20322103212 is an abundant number, since it is smaller than the sum of its proper divisors (34263434340).

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

20322103212 is a wasteful number, since it uses less digits than its factorization.

20322103212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118479 (or 118474 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20322103212 its reverse (21230122302), we get a palindrome (41552225514).

The spelling of 20322103212 in words is "twenty billion, three hundred twenty-two million, one hundred three thousand, two hundred twelve".