2001222021010 has 32 divisors (see below), whose sum is σ = 3792058983360. Its totient is φ = 758303840448.

The previous prime is 2001222020969. The next prime is 2001222021011. The reversal of 2001222021010 is 101202221002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2001222021011) 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, 2353684 + ... + 3089056.

It is an arithmetic number, because the mean of its divisors is an integer number (118501843230).

Almost surely, 2^{2001222021010} is an apocalyptic number.

2001222021010 is a deficient number, since it is larger than the sum of its proper divisors (1790836962350).

2001222021010 is a wasteful number, since it uses less digits than its factorization.

2001222021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749722.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2001222021010 its reverse (101202221002), we get a palindrome (2102424242012).

The spelling of 2001222021010 in words is "two trillion, one billion, two hundred twenty-two million, twenty-one thousand, ten".