221200021102212 has 48 divisors (see below), whose sum is σ = 580561555179200. Its totient is φ = 73733340364488.

The previous prime is 221200021102199. The next prime is 221200021102271. The reversal of 221200021102212 is 212201120002122.

It is a happy number.

221200021102212 is a `hidden beast` number, since 221 + 20 + 0 + 0 + 211 + 0 + 2 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12642882262 + ... + 12642899757.

Almost surely, 2^{221200021102212} is an apocalyptic number.

It is an amenable number.

221200021102212 is an abundant number, since it is smaller than the sum of its proper divisors (359361534076988).

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

221200021102212 is an equidigital number, since it uses as much as digits as its factorization.

221200021102212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25285782044 (or 25285782024 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221200021102212 its reverse (212201120002122), we get a palindrome (433401141104334).

The spelling of 221200021102212 in words is "two hundred twenty-one trillion, two hundred billion, twenty-one million, one hundred two thousand, two hundred twelve".