1220211201122 has 4 divisors (see below), whose sum is σ = 1830316801686. Its totient is φ = 610105600560.

The previous prime is 1220211201089. The next prime is 1220211201151. The reversal of 1220211201122 is 2211021120221.

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., 1123894699321 + 96316501801 = 1060139^2 + 310349^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1220211201122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305052800279 + ... + 305052800282.

Almost surely, 2^{1220211201122} is an apocalyptic number.

1220211201122 is a deficient number, since it is larger than the sum of its proper divisors (610105600564).

1220211201122 is an equidigital number, since it uses as much as digits as its factorization.

1220211201122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610105600563.

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

Adding to 1220211201122 its reverse (2211021120221), we get a palindrome (3431232321343).

The spelling of 1220211201122 in words is "one trillion, two hundred twenty billion, two hundred eleven million, two hundred one thousand, one hundred twenty-two".