1220021122222 has 32 divisors (see below), whose sum is σ = 2214554620608. Its totient is φ = 492095471616.

The previous prime is 1220021122181. The next prime is 1220021122253. The reversal of 1220021122222 is 2222211200221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220021122222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14718718 + ... + 14801374.

It is an arithmetic number, because the mean of its divisors is an integer number (69204831894).

Almost surely, 2^{1220021122222} is an apocalyptic number.

1220021122222 is a deficient number, since it is larger than the sum of its proper divisors (994533498386).

1220021122222 is a wasteful number, since it uses less digits than its factorization.

1220021122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144700.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1220021122222 its reverse (2222211200221), we get a palindrome (3442232322443).

The spelling of 1220021122222 in words is "one trillion, two hundred twenty billion, twenty-one million, one hundred twenty-two thousand, two hundred twenty-two".