1021112212222 has 8 divisors (see below), whose sum is σ = 1531677556296. Its totient is φ = 510553026792.

The previous prime is 1021112212157. The next prime is 1021112212271. The reversal of 1021112212222 is 2222122111201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1021112212222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1100053 + ... + 1803424.

It is an arithmetic number, because the mean of its divisors is an integer number (191459694537).

Almost surely, 2^{1021112212222} is an apocalyptic number.

1021112212222 is a deficient number, since it is larger than the sum of its proper divisors (510565344074).

1021112212222 is a wasteful number, since it uses less digits than its factorization.

1021112212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079322.

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

Adding to 1021112212222 its reverse (2222122111201), we get a palindrome (3243234323423).

The spelling of 1021112212222 in words is "one trillion, twenty-one billion, one hundred twelve million, two hundred twelve thousand, two hundred twenty-two".