101221022100220 has 24 divisors (see below), whose sum is σ = 231888159721008. Its totient is φ = 36807644400000.

The previous prime is 101221022100203. The next prime is 101221022100221. The reversal of 101221022100220 is 22001220122101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 101221022100194 and 101221022100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221022100221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230047777281 + ... + 230047777720.

It is an arithmetic number, because the mean of its divisors is an integer number (9662006655042).

Almost surely, 2^{101221022100220} is an apocalyptic number.

101221022100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101221022100220 is an abundant number, since it is smaller than the sum of its proper divisors (130667137620788).

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

101221022100220 is a wasteful number, since it uses less digits than its factorization.

101221022100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460095555021 (or 460095555019 counting only the distinct ones).

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

Adding to 101221022100220 its reverse (22001220122101), we get a palindrome (123222242222321).

The spelling of 101221022100220 in words is "one hundred one trillion, two hundred twenty-one billion, twenty-two million, one hundred thousand, two hundred twenty".