1022212221212 has 96 divisors (see below), whose sum is σ = 2286645258240. Its totient is φ = 389078922240.

The previous prime is 1022212221197. The next prime is 1022212221241. The reversal of 1022212221212 is 2121222122201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503012 + ... + 1515732.

It is an arithmetic number, because the mean of its divisors is an integer number (23819221440).

Almost surely, 2^{1022212221212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022212221212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1143322629120).

1022212221212 is an abundant number, since it is smaller than the sum of its proper divisors (1264433037028).

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

1022212221212 is a wasteful number, since it uses less digits than its factorization.

1022212221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012851 (or 1012849 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1022212221212 its reverse (2121222122201), we get a palindrome (3143434343413).

It can be divided in two parts, 10 and 22212221212, that added together give a palindrome (22212221222).

The spelling of 1022212221212 in words is "one trillion, twenty-two billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twelve".