1321201201112 has 64 divisors (see below), whose sum is σ = 2688831905760. Its totient is φ = 604982476800.

The previous prime is 1321201201069. The next prime is 1321201201153. The reversal of 1321201201112 is 2111021021231.

It is a happy number.

It is a super-2 number, since 2×1321201201112² (a number of 25 digits) contains 22 as substring.

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, 71666648 + ... + 71685080.

Almost surely, 2^{1321201201112} 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 1321201201112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1344415952880).

1321201201112 is an abundant number, since it is smaller than the sum of its proper divisors (1367630704648).

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

1321201201112 is a wasteful number, since it uses less digits than its factorization.

1321201201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23844 (or 23840 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1321201201112 its reverse (2111021021231), we get a palindrome (3432222222343).

The spelling of 1321201201112 in words is "one trillion, three hundred twenty-one billion, two hundred one million, two hundred one thousand, one hundred twelve".