1220211110012 has 12 divisors (see below), whose sum is σ = 2165445068976. Its totient is φ = 601512518880.

The previous prime is 1220211110009. The next prime is 1220211110029. The reversal of 1220211110012 is 2100111120221.

It is a congruent number.

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, 2148258713 + ... + 2148259280.

It is an arithmetic number, because the mean of its divisors is an integer number (180453755748).

Almost surely, 2^{1220211110012} is an apocalyptic number.

It is an amenable number.

1220211110012 is a deficient number, since it is larger than the sum of its proper divisors (945233958964).

1220211110012 is a wasteful number, since it uses less digits than its factorization.

1220211110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296518068 (or 4296518066 counting only the distinct ones).

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

Adding to 1220211110012 its reverse (2100111120221), we get a palindrome (3320322230233).

The spelling of 1220211110012 in words is "one trillion, two hundred twenty billion, two hundred eleven million, one hundred ten thousand, twelve".