1220111012122 has 8 divisors (see below), whose sum is σ = 1830825570996. Its totient is φ = 609835821792.

The previous prime is 1220111012077. The next prime is 1220111012123. The reversal of 1220111012122 is 2212101110221.

It can be written as a sum of positive squares in 2 ways, for example, as 929718279961 + 290392732161 = 964219^2 + 538881^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1220111012096 and 1220111012105.

It is not an unprimeable number, because it can be changed into a prime (1220111012123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109835193 + ... + 109846300.

Almost surely, 2^{1220111012122} is an apocalyptic number.

1220111012122 is a deficient number, since it is larger than the sum of its proper divisors (610714558874).

1220111012122 is a wasteful number, since it uses less digits than its factorization.

1220111012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219684272.

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

Adding to 1220111012122 its reverse (2212101110221), we get a palindrome (3432212122343).

The spelling of 1220111012122 in words is "one trillion, two hundred twenty billion, one hundred eleven million, twelve thousand, one hundred twenty-two".