1220111211122 has 8 divisors (see below), whose sum is σ = 1830237228972. Its totient is φ = 610032134800.

The previous prime is 1220111211101. The next prime is 1220111211133. The reversal of 1220111211122 is 2211121110221.

It can be written as a sum of positive squares in 2 ways, for example, as 983466906601 + 236644304521 = 991699^2 + 486461^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1220111211122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11670329 + ... + 11774412.

Almost surely, 2^{1220111211122} is an apocalyptic number.

1220111211122 is a deficient number, since it is larger than the sum of its proper divisors (610126017850).

1220111211122 is a wasteful number, since it uses less digits than its factorization.

1220111211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23470764.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1220111211122 its reverse (2211121110221), we get a palindrome (3431232321343).

The spelling of 1220111211122 in words is "one trillion, two hundred twenty billion, one hundred eleven million, two hundred eleven thousand, one hundred twenty-two".