20121122210 has 32 divisors (see below), whose sum is σ = 41424469632. Its totient is φ = 6893262720.

The previous prime is 20121122209. The next prime is 20121122237. The reversal of 20121122210 is 1222112102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22211 + ... + 201830.

It is an arithmetic number, because the mean of its divisors is an integer number (1294514676).

Almost surely, 2^20121122210 is an apocalyptic number.

20121122210 is an abundant number, since it is smaller than the sum of its proper divisors (21303347422).

20121122210 is a wasteful number, since it uses less digits than its factorization.

20121122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225338.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20121122210 its reverse (1222112102), we get a palindrome (21343234312).

The spelling of 20121122210 in words is "twenty billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred ten".