221002020112 has 20 divisors (see below), whose sum is σ = 429783211980. Its totient is φ = 110090223488.

The previous prime is 221002020097. The next prime is 221002020119. The reversal of 221002020112 is 211020200122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 121148548096 + 99853472016 = 348064^2 + 315996^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221002020092 and 221002020101.

It is not an unprimeable number, because it can be changed into a prime (221002020119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25669723 + ... + 25678330.

It is an arithmetic number, because the mean of its divisors is an integer number (21489160599).

Almost surely, 2^221002020112 is an apocalyptic number.

It is an amenable number.

221002020112 is a deficient number, since it is larger than the sum of its proper divisors (208781191868).

221002020112 is a wasteful number, since it uses less digits than its factorization.

221002020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51348330 (or 51348324 counting only the distinct ones).

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

Adding to 221002020112 its reverse (211020200122), we get a palindrome (432022220234).

The spelling of 221002020112 in words is "two hundred twenty-one billion, two million, twenty thousand, one hundred twelve".