20101001220222 has 64 divisors (see below), whose sum is σ = 44216957998080. Its totient is φ = 6053146568064.

The previous prime is 20101001220173. The next prime is 20101001220343. The reversal of 20101001220222 is 22202210010102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167765928 + ... + 167885700.

It is an arithmetic number, because the mean of its divisors is an integer number (690889968720).

Almost surely, 2^{20101001220222} is an apocalyptic number.

20101001220222 is an abundant number, since it is smaller than the sum of its proper divisors (24115956777858).

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

20101001220222 is a wasteful number, since it uses less digits than its factorization.

20101001220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165617.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20101001220222 its reverse (22202210010102), we get a palindrome (42303211230324).

The spelling of 20101001220222 in words is "twenty trillion, one hundred one billion, one million, two hundred twenty thousand, two hundred twenty-two".