1022212211222 has 4 divisors (see below), whose sum is σ = 1533318316836. Its totient is φ = 511106105610.

The previous prime is 1022212211179. The next prime is 1022212211263. The reversal of 1022212211222 is 2221122122201.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1022212211194 and 1022212211203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255553052804 + ... + 255553052807.

It is an arithmetic number, because the mean of its divisors is an integer number (383329579209).

Almost surely, 2^{1022212211222} is an apocalyptic number.

1022212211222 is a deficient number, since it is larger than the sum of its proper divisors (511106105614).

1022212211222 is an equidigital number, since it uses as much as digits as its factorization.

1022212211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511106105613.

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

Adding to 1022212211222 its reverse (2221122122201), we get a palindrome (3243334333423).

The spelling of 1022212211222 in words is "one trillion, twenty-two billion, two hundred twelve million, two hundred eleven thousand, two hundred twenty-two".