1220211202112 has 112 divisors (see below), whose sum is σ = 3001510245888. Its totient is φ = 480181370880.

The previous prime is 1220211202097. The next prime is 1220211202127. The reversal of 1220211202112 is 2112021120221.

It is an interprime number because it is at equal distance from previous prime (1220211202097) and next prime (1220211202127).

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×1220211202112² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1641608 + ... + 2266119.

It is an arithmetic number, because the mean of its divisors is an integer number (26799198624).

Almost surely, 2^{1220211202112} is an apocalyptic number.

It is an amenable number.

1220211202112 is an abundant number, since it is smaller than the sum of its proper divisors (1781299043776).

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

1220211202112 is a wasteful number, since it uses less digits than its factorization.

1220211202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907804 (or 3907794 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1220211202112 its reverse (2112021120221), we get a palindrome (3332232322333).

The spelling of 1220211202112 in words is "one trillion, two hundred twenty billion, two hundred eleven million, two hundred two thousand, one hundred twelve".