20121322210 has 32 divisors (see below), whose sum is σ = 40785513984. Its totient is φ = 7080816000.

The previous prime is 20121322187. The next prime is 20121322211. The reversal of 20121322210 is 1222312102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20121322211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2946931 + ... + 2953750.

It is an arithmetic number, because the mean of its divisors is an integer number (1274547312).

Almost surely, 2^20121322210 is an apocalyptic number.

20121322210 is an abundant number, since it is smaller than the sum of its proper divisors (20664191774).

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

20121322210 is a wasteful number, since it uses less digits than its factorization.

20121322210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5900730.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20121322210 its reverse (1222312102), we get a palindrome (21343634312).

The spelling of 20121322210 in words is "twenty billion, one hundred twenty-one million, three hundred twenty-two thousand, two hundred ten".