221002112202012 has 36 divisors (see below), whose sum is σ = 582933107549520. Its totient is φ = 70464441571392.

The previous prime is 221002112201953. The next prime is 221002112202013. The reversal of 221002112202012 is 210202211200122.

It is a happy number.

221002112202012 is a `hidden beast` number, since 2 + 210 + 0 + 211 + 220 + 20 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002112202013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133455380937 + ... + 133455382592.

It is an arithmetic number, because the mean of its divisors is an integer number (16192586320820).

Almost surely, 2^{221002112202012} is an apocalyptic number.

It is an amenable number.

221002112202012 is an abundant number, since it is smaller than the sum of its proper divisors (361930995347508).

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

221002112202012 is a wasteful number, since it uses less digits than its factorization.

221002112202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266910763562 (or 266910763557 counting only the distinct ones).

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

Adding to 221002112202012 its reverse (210202211200122), we get a palindrome (431204323402134).

The spelling of 221002112202012 in words is "two hundred twenty-one trillion, two billion, one hundred twelve million, two hundred two thousand, twelve".