20201220221110 has 48 divisors (see below), whose sum is σ = 38628204036336. Its totient is φ = 7604922271232.

The previous prime is 20201220221023. The next prime is 20201220221179. The reversal of 20201220221110 is 1112202210202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108695424 + ... + 108881116.

It is an arithmetic number, because the mean of its divisors is an integer number (804754250757).

Almost surely, 2^{20201220221110} is an apocalyptic number.

20201220221110 is a deficient number, since it is larger than the sum of its proper divisors (18426983815226).

20201220221110 is a wasteful number, since it uses less digits than its factorization.

20201220221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223377 (or 223360 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20201220221110 its reverse (1112202210202), we get a palindrome (21313422431312).

The spelling of 20201220221110 in words is "twenty trillion, two hundred one billion, two hundred twenty million, two hundred twenty-one thousand, one hundred ten".