1211243300112 has 20 divisors (see below), whose sum is σ = 3129045192080. Its totient is φ = 403747766688.

The previous prime is 1211243300101. The next prime is 1211243300143. The reversal of 1211243300112 is 2110033421121.

It is a super-2 number, since 2×1211243300112² (a number of 25 digits) contains 22 as substring.

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, 12617117662 + ... + 12617117757.

It is an arithmetic number, because the mean of its divisors is an integer number (156452259604).

Almost surely, 2^{1211243300112} is an apocalyptic number.

1211243300112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211243300112 is an abundant number, since it is smaller than the sum of its proper divisors (1917801891968).

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

1211243300112 is a wasteful number, since it uses less digits than its factorization.

1211243300112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25234235430 (or 25234235424 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1211243300112 its reverse (2110033421121), we get a palindrome (3321276721233).

The spelling of 1211243300112 in words is "one trillion, two hundred eleven billion, two hundred forty-three million, three hundred thousand, one hundred twelve".