1022121210222 has 96 divisors (see below), whose sum is σ = 2567554142400. Its totient is φ = 287818997760.

The previous prime is 1022121210203. The next prime is 1022121210223. The reversal of 1022121210222 is 2220121212201.

It is a happy number.

1022121210222 is a `hidden beast` number, since 1 + 0 + 221 + 212 + 10 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1022121210195 and 1022121210204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022121210223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12477654 + ... + 12559302.

It is an arithmetic number, because the mean of its divisors is an integer number (26745355650).

Almost surely, 2^{1022121210222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022121210222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1283777071200).

1022121210222 is an abundant number, since it is smaller than the sum of its proper divisors (1545432932178).

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

1022121210222 is a wasteful number, since it uses less digits than its factorization.

1022121210222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83098 (or 83095 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1022121210222 its reverse (2220121212201), we get a palindrome (3242242422423).

The spelling of 1022121210222 in words is "one trillion, twenty-two billion, one hundred twenty-one million, two hundred ten thousand, two hundred twenty-two".