20001220210110 has 16 divisors (see below), whose sum is σ = 48002928504336. Its totient is φ = 5333658722688.

The previous prime is 20001220210019. The next prime is 20001220210123. The reversal of 20001220210110 is 1101202210002.

It is a congruent number.

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, 333353670139 + ... + 333353670198.

It is an arithmetic number, because the mean of its divisors is an integer number (3000183031521).

Almost surely, 2^{20001220210110} is an apocalyptic number.

20001220210110 is an abundant number, since it is smaller than the sum of its proper divisors (28001708294226).

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

20001220210110 is a wasteful number, since it uses less digits than its factorization.

20001220210110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666707340347.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20001220210110 its reverse (1101202210002), we get a palindrome (21102422420112).

The spelling of 20001220210110 in words is "twenty trillion, one billion, two hundred twenty million, two hundred ten thousand, one hundred ten".