1011221210222 has 4 divisors (see below), whose sum is σ = 1516831815336. Its totient is φ = 505610605110.

The previous prime is 1011221210201. The next prime is 1011221210231. The reversal of 1011221210222 is 2220121221101.

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 1011221210222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252805302554 + ... + 252805302557.

It is an arithmetic number, because the mean of its divisors is an integer number (379207953834).

Almost surely, 2^{1011221210222} is an apocalyptic number.

1011221210222 is a deficient number, since it is larger than the sum of its proper divisors (505610605114).

1011221210222 is an equidigital number, since it uses as much as digits as its factorization.

1011221210222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505610605113.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1011221210222 its reverse (2220121221101), we get a palindrome (3231342431323).

The spelling of 1011221210222 in words is "one trillion, eleven billion, two hundred twenty-one million, two hundred ten thousand, two hundred twenty-two".