20213322312 has 16 divisors (see below), whose sum is σ = 50533305840. Its totient is φ = 6737774096.

The previous prime is 20213322299. The next prime is 20213322313. The reversal of 20213322312 is 21322331202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20213322313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421110858 + ... + 421110905.

It is an arithmetic number, because the mean of its divisors is an integer number (3158331615).

Almost surely, 2^20213322312 is an apocalyptic number.

It is an amenable number.

20213322312 is an abundant number, since it is smaller than the sum of its proper divisors (30319983528).

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

20213322312 is a wasteful number, since it uses less digits than its factorization.

20213322312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842221772 (or 842221768 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20213322312 its reverse (21322331202), we get a palindrome (41535653514).

The spelling of 20213322312 in words is "twenty billion, two hundred thirteen million, three hundred twenty-two thousand, three hundred twelve".