221202020112 has 80 divisors (see below), whose sum is σ = 621405441792. Its totient is φ = 67521116160.

The previous prime is 221202020101. The next prime is 221202020119. The reversal of 221202020112 is 211020202122.

It is a junction number, because it is equal to n+sod(n) for n = 221202020091 and 221202020100.

It is not an unprimeable number, because it can be changed into a prime (221202020119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3633064 + ... + 3693447.

Almost surely, 2^221202020112 is an apocalyptic number.

It is an amenable number.

221202020112 is an abundant number, since it is smaller than the sum of its proper divisors (400203421680).

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

221202020112 is a wasteful number, since it uses less digits than its factorization.

221202020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7326576 (or 7326570 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221202020112 its reverse (211020202122), we get a palindrome (432222222234).

The spelling of 221202020112 in words is "two hundred twenty-one billion, two hundred two million, twenty thousand, one hundred twelve".