220001109912 has 32 divisors (see below), whose sum is σ = 611114194800. Its totient is φ = 73333703232.

The previous prime is 220001109859. The next prime is 220001109919. The reversal of 220001109912 is 219901100022.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220001109919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509261613 + ... + 509262044.

Almost surely, 2^220001109912 is an apocalyptic number.

It is an amenable number.

220001109912 is an abundant number, since it is smaller than the sum of its proper divisors (391113084888).

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

220001109912 is a wasteful number, since it uses less digits than its factorization.

220001109912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018523672 (or 1018523662 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

Adding to 220001109912 its reverse (219901100022), we get a palindrome (439902209934).

The spelling of 220001109912 in words is "two hundred twenty billion, one million, one hundred nine thousand, nine hundred twelve".