121111020201200 has 60 divisors (see below), whose sum is σ = 290970810046800. Its totient is φ = 48444144353280.

The previous prime is 121111020201179. The next prime is 121111020201203. The reversal of 121111020201200 is 2102020111121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121111020201203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83520752 + ... + 84958448.

It is an arithmetic number, because the mean of its divisors is an integer number (4849513500780).

Almost surely, 2^{121111020201200} is an apocalyptic number.

121111020201200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121111020201200 is an abundant number, since it is smaller than the sum of its proper divisors (169859789845600).

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

121111020201200 is a wasteful number, since it uses less digits than its factorization.

121111020201200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648314 (or 1648303 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121111020201200 its reverse (2102020111121), we get a palindrome (123213040312321).

The spelling of 121111020201200 in words is "one hundred twenty-one trillion, one hundred eleven billion, twenty million, two hundred one thousand, two hundred".