220001021212 has 24 divisors (see below), whose sum is σ = 447459707520. Its totient is φ = 92688080880.

The previous prime is 220001021209. The next prime is 220001021249. The reversal of 220001021212 is 212120100022.

It is a happy number.

220001021212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 220001021192 and 220001021201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66584614 + ... + 66587917.

It is an arithmetic number, because the mean of its divisors is an integer number (18644154480).

Almost surely, 2^220001021212 is an apocalyptic number.

It is an amenable number.

220001021212 is an abundant number, since it is smaller than the sum of its proper divisors (227458686308).

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

220001021212 is a wasteful number, since it uses less digits than its factorization.

220001021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133172601 (or 133172599 counting only the distinct ones).

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

Adding to 220001021212 its reverse (212120100022), we get a palindrome (432121121234).

It can be divided in two parts, 2200010 and 21212, that added together give a palindrome (2221222).

The spelling of 220001021212 in words is "two hundred twenty billion, one million, twenty-one thousand, two hundred twelve".