1220211111122 has 8 divisors (see below), whose sum is σ = 1831134144000. Its totient is φ = 609833063124.

The previous prime is 1220211111083. The next prime is 1220211111137. The reversal of 1220211111122 is 2211111120221.

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 1220211111122.

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, 136240622 + ... + 136249577.

It is an arithmetic number, because the mean of its divisors is an integer number (228891768000).

Almost surely, 2^{1220211111122} is an apocalyptic number.

1220211111122 is a deficient number, since it is larger than the sum of its proper divisors (610923032878).

1220211111122 is a wasteful number, since it uses less digits than its factorization.

1220211111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272492440.

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

Adding to 1220211111122 its reverse (2211111120221), we get a palindrome (3431322231343).

Subtracting 1220211111122 from its reverse (2211111120221), we obtain a palindrome (990900009099).

The spelling of 1220211111122 in words is "one trillion, two hundred twenty billion, two hundred eleven million, one hundred eleven thousand, one hundred twenty-two".