220201210020100 has 36 divisors (see below), whose sum is σ = 486852411146724. Its totient is φ = 86418588081280.

The previous prime is 220201210020073. The next prime is 220201210020133. The reversal of 220201210020100 is 1020012102022.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 18605057236164 + 201596152783936 = 4313358^2 + 14198456^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20773693759 + ... + 20773704358.

It is an arithmetic number, because the mean of its divisors is an integer number (13523678087409).

Almost surely, 2^{220201210020100} is an apocalyptic number.

220201210020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220201210020100 is an abundant number, since it is smaller than the sum of its proper divisors (266651201126624).

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

220201210020100 is a wasteful number, since it uses less digits than its factorization.

220201210020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41547398184 (or 41547398177 counting only the distinct ones).

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

Adding to 220201210020100 its reverse (1020012102022), we get a palindrome (221221222122122).

The spelling of 220201210020100 in words is "two hundred twenty trillion, two hundred one billion, two hundred ten million, twenty thousand, one hundred".