221111002212 has 24 divisors (see below), whose sum is σ = 518178628800. Its totient is φ = 73381816416.

The previous prime is 221111002183. The next prime is 221111002213. The reversal of 221111002212 is 212200111122.

It is a junction number, because it is equal to n+sod(n) for n = 221111002191 and 221111002200.

It is not an unprimeable number, because it can be changed into a prime (221111002213) 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, 40228512 + ... + 40234007.

It is an arithmetic number, because the mean of its divisors is an integer number (21590776200).

Almost surely, 2^221111002212 is an apocalyptic number.

It is an amenable number.

221111002212 is an abundant number, since it is smaller than the sum of its proper divisors (297067626588).

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

221111002212 is a wasteful number, since it uses less digits than its factorization.

221111002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80462755 (or 80462753 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221111002212 its reverse (212200111122), we get a palindrome (433311113334).

The spelling of 221111002212 in words is "two hundred twenty-one billion, one hundred eleven million, two thousand, two hundred twelve".