20001222001010 has 128 divisors (see below), whose sum is σ = 40864584499200. Its totient is φ = 7008407746560.

The previous prime is 20001222001003. The next prime is 20001222001027. The reversal of 20001222001010 is 1010022210002.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20001222000982 and 20001222001000.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 125772167 + ... + 125931093.

It is an arithmetic number, because the mean of its divisors is an integer number (319254566400).

Almost surely, 2^{20001222001010} is an apocalyptic number.

20001222001010 is an abundant number, since it is smaller than the sum of its proper divisors (20863362498190).

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

20001222001010 is a wasteful number, since it uses less digits than its factorization.

20001222001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159936.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20001222001010 its reverse (1010022210002), we get a palindrome (21011244211012).

The spelling of 20001222001010 in words is "twenty trillion, one billion, two hundred twenty-two million, one thousand, ten".