1020210221222 has 4 divisors (see below), whose sum is σ = 1530315331836. Its totient is φ = 510105110610.

The previous prime is 1020210221203. The next prime is 1020210221227. The reversal of 1020210221222 is 2221220120201.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1020210221222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020210221227) by changing a digit.

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 as a sum of consecutive naturals, namely, 255052555304 + ... + 255052555307.

It is an arithmetic number, because the mean of its divisors is an integer number (382578832959).

Almost surely, 2^{1020210221222} is an apocalyptic number.

1020210221222 is a deficient number, since it is larger than the sum of its proper divisors (510105110614).

1020210221222 is an equidigital number, since it uses as much as digits as its factorization.

1020210221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510105110613.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1020210221222 its reverse (2221220120201), we get a palindrome (3241430341423).

The spelling of 1020210221222 in words is "one trillion, twenty billion, two hundred ten million, two hundred twenty-one thousand, two hundred twenty-two".