1210220220322 has 4 divisors (see below), whose sum is σ = 1815330330486. Its totient is φ = 605110110160.

The previous prime is 1210220220301. The next prime is 1210220220329. The reversal of 1210220220322 is 2230220220121.

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

It can be written as a sum of positive squares in only one way, i.e., 843346518921 + 366873701401 = 918339^2 + 605701^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1210220220322.

It is not an unprimeable number, because it can be changed into a prime (1210220220329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302555055079 + ... + 302555055082.

Almost surely, 2^{1210220220322} is an apocalyptic number.

1210220220322 is a deficient number, since it is larger than the sum of its proper divisors (605110110164).

1210220220322 is an equidigital number, since it uses as much as digits as its factorization.

1210220220322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605110110163.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 1210220220322 its reverse (2230220220121), we get a palindrome (3440440440443).

The spelling of 1210220220322 in words is "one trillion, two hundred ten billion, two hundred twenty million, two hundred twenty thousand, three hundred twenty-two".