1220211100112 has 80 divisors (see below), whose sum is σ = 2668331001600. Its totient is φ = 537108848640.

The previous prime is 1220211100109. The next prime is 1220211100123. The reversal of 1220211100112 is 2110011120221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1086089 + ... + 1902632.

It is an arithmetic number, because the mean of its divisors is an integer number (33354137520).

Almost surely, 2^{1220211100112} is an apocalyptic number.

It is an amenable number.

1220211100112 is an abundant number, since it is smaller than the sum of its proper divisors (1448119901488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220211100112 is a wasteful number, since it uses less digits than its factorization.

1220211100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988844 (or 2988838 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1220211100112 its reverse (2110011120221), we get a palindrome (3330222220333).

The spelling of 1220211100112 in words is "one trillion, two hundred twenty billion, two hundred eleven million, one hundred thousand, one hundred twelve".