1220121201122 has 16 divisors (see below), whose sum is σ = 1904485603680. Its totient is φ = 585773597472.

The previous prime is 1220121201121. The next prime is 1220121201133. The reversal of 1220121201122 is 2211021210221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220121201122.

It is not an unprimeable number, because it can be changed into a prime (1220121201121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120227603 + ... + 120237750.

It is an arithmetic number, because the mean of its divisors is an integer number (119030350230).

Almost surely, 2^{1220121201122} is an apocalyptic number.

1220121201122 is a deficient number, since it is larger than the sum of its proper divisors (684364402558).

1220121201122 is a wasteful number, since it uses less digits than its factorization.

1220121201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240465457.

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

Adding to 1220121201122 its reverse (2211021210221), we get a palindrome (3431142411343).

Subtracting 1220121201122 from its reverse (2211021210221), we obtain a palindrome (990900009099).

The spelling of 1220121201122 in words is "one trillion, two hundred twenty billion, one hundred twenty-one million, two hundred one thousand, one hundred twenty-two".