1201010111200 has 144 divisors (see below), whose sum is σ = 3106753592544. Its totient is φ = 451807232000.

The previous prime is 1201010111153. The next prime is 1201010111201. The reversal of 1201010111200 is 21110101021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201010111201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18558900 + ... + 18623500.

It is an arithmetic number, because the mean of its divisors is an integer number (21574677726).

Almost surely, 2^{1201010111200} is an apocalyptic number.

1201010111200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201010111200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1553376796272).

1201010111200 is an abundant number, since it is smaller than the sum of its proper divisors (1905743481344).

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

1201010111200 is a wasteful number, since it uses less digits than its factorization.

1201010111200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66005 (or 65992 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1201010111200 its reverse (21110101021), we get a palindrome (1222120212221).

The spelling of 1201010111200 in words is "one trillion, two hundred one billion, ten million, one hundred eleven thousand, two hundred".