1022211121212 has 24 divisors (see below), whose sum is σ = 2650176981200. Its totient is φ = 340737040368.

The previous prime is 1022211121187. The next prime is 1022211121241. The reversal of 1022211121212 is 2121211122201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4732458787 + ... + 4732459002.

Almost surely, 2^{1022211121212} is an apocalyptic number.

1022211121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1022211121212 is an abundant number, since it is smaller than the sum of its proper divisors (1627965859988).

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

1022211121212 is a wasteful number, since it uses less digits than its factorization.

1022211121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9464917802 (or 9464917794 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1022211121212 its reverse (2121211122201), we get a palindrome (3143422243413).

The spelling of 1022211121212 in words is "one trillion, twenty-two billion, two hundred eleven million, one hundred twenty-one thousand, two hundred twelve".