20001222010 has 64 divisors (see below), whose sum is σ = 46333845504. Its totient is φ = 6033038400.

The previous prime is 20001221987. The next prime is 20001222013. The reversal of 20001222010 is 1022210002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (20001222013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 395092 + ... + 442831.

It is an arithmetic number, because the mean of its divisors is an integer number (723966336).

Almost surely, 2^20001222010 is an apocalyptic number.

20001222010 is an abundant number, since it is smaller than the sum of its proper divisors (26332623494).

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

20001222010 is a wasteful number, since it uses less digits than its factorization.

20001222010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837979.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20001222010 its reverse (1022210002), we get a palindrome (21023432012).

The spelling of 20001222010 in words is "twenty billion, one million, two hundred twenty-two thousand, ten".