1212200220112 has 80 divisors (see below), whose sum is σ = 2701144433152. Its totient is φ = 516235991040.

The previous prime is 1212200220109. The next prime is 1212200220167. The reversal of 1212200220112 is 2110220022121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 12448798 + ... + 12545794.

Almost surely, 2^{1212200220112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212200220112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1350572216576).

1212200220112 is an abundant number, since it is smaller than the sum of its proper divisors (1488944213040).

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

1212200220112 is a wasteful number, since it uses less digits than its factorization.

1212200220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97716 (or 97710 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212200220112 its reverse (2110220022121), we get a palindrome (3322420242233).

The spelling of 1212200220112 in words is "one trillion, two hundred twelve billion, two hundred million, two hundred twenty thousand, one hundred twelve".