222101010221212 has 24 divisors (see below), whose sum is σ = 409158858885840. Its totient is φ = 105199205368320.

The previous prime is 222101010221173. The next prime is 222101010221267. The reversal of 222101010221212 is 212122010101222.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 222101010221212.

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, 89550739 + ... + 91997482.

It is an arithmetic number, because the mean of its divisors is an integer number (17048285786910).

Almost surely, 2^{222101010221212} is an apocalyptic number.

It is an amenable number.

222101010221212 is a deficient number, since it is larger than the sum of its proper divisors (187057848664628).

222101010221212 is a wasteful number, since it uses less digits than its factorization.

222101010221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181564341 (or 181564339 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222101010221212 its reverse (212122010101222), we get a palindrome (434223020322434).

The spelling of 222101010221212 in words is "two hundred twenty-two trillion, one hundred one billion, ten million, two hundred twenty-one thousand, two hundred twelve".