20001001222010 has 16 divisors (see below), whose sum is σ = 36159015313800. Its totient is φ = 7965464241216.

The previous prime is 20001001221997. The next prime is 20001001222021. The reversal of 20001001222010 is 1022210010002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15755922013129 + 4245079208881 = 3969373^2 + 2060359^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20001001221982 and 20001001222000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4367028545 + ... + 4367033124.

Almost surely, 2^{20001001222010} is an apocalyptic number.

20001001222010 is a deficient number, since it is larger than the sum of its proper divisors (16158014091790).

20001001222010 is a wasteful number, since it uses less digits than its factorization.

20001001222010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8734061905.

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

Adding to 20001001222010 its reverse (1022210010002), we get a palindrome (21023211232012).

The spelling of 20001001222010 in words is "twenty trillion, one billion, one million, two hundred twenty-two thousand, ten".