1220111021122 has 16 divisors (see below), whose sum is σ = 2098217067840. Its totient is φ = 521255179728.

The previous prime is 1220111021083. The next prime is 1220111021149. The reversal of 1220111021122 is 2211201110221.

It is a junction number, because it is equal to n+sod(n) for n = 1220111021096 and 1220111021105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137457372 + ... + 137466247.

It is an arithmetic number, because the mean of its divisors is an integer number (131138566740).

Almost surely, 2^{1220111021122} is an apocalyptic number.

1220111021122 is a deficient number, since it is larger than the sum of its proper divisors (878106046718).

1220111021122 is a wasteful number, since it uses less digits than its factorization.

1220111021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274923945.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1220111021122 its reverse (2211201110221), we get a palindrome (3431312131343).

The spelling of 1220111021122 in words is "one trillion, two hundred twenty billion, one hundred eleven million, twenty-one thousand, one hundred twenty-two".