1220011211112 has 64 divisors (see below), whose sum is σ = 3175371814080. Its totient is φ = 390259026432.

The previous prime is 1220011211093. The next prime is 1220011211131. The reversal of 1220011211112 is 2111121100221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1220011211093) and next prime (1220011211131).

It is a junction number, because it is equal to n+sod(n) for n = 1220011211091 and 1220011211100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9345358 + ... + 9475005.

It is an arithmetic number, because the mean of its divisors is an integer number (49615184595).

Almost surely, 2^{1220011211112} is an apocalyptic number.

1220011211112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220011211112 is an abundant number, since it is smaller than the sum of its proper divisors (1955360602968).

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

1220011211112 is a wasteful number, since it uses less digits than its factorization.

1220011211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18820482 (or 18820478 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1220011211112 its reverse (2111121100221), we get a palindrome (3331132311333).

The spelling of 1220011211112 in words is "one trillion, two hundred twenty billion, eleven million, two hundred eleven thousand, one hundred twelve".