221201002210220 has 24 divisors (see below), whose sum is σ = 466954157553408. Its totient is φ = 88017152710400.

The previous prime is 221201002210219. The next prime is 221201002210343. The reversal of 221201002210220 is 22012200102122.

It is a happy number.

221201002210220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 28953006941 + ... + 28953014580.

It is an arithmetic number, because the mean of its divisors is an integer number (19456423231392).

Almost surely, 2^{221201002210220} is an apocalyptic number.

221201002210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221201002210220 is an abundant number, since it is smaller than the sum of its proper divisors (245753155343188).

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

221201002210220 is a wasteful number, since it uses less digits than its factorization.

221201002210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57906021721 (or 57906021719 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221201002210220 its reverse (22012200102122), we get a palindrome (243213202312342).

The spelling of 221201002210220 in words is "two hundred twenty-one trillion, two hundred one billion, two million, two hundred ten thousand, two hundred twenty".