121201101222000 has 640 divisors, whose sum is σ = 407069595878400. Its totient is φ = 30987016704000.

The previous prime is 121201101221983. The next prime is 121201101222023. The reversal of 121201101222000 is 222101102121.

It is a super-3 number, since 3×121201101222000³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 17145434466 + ... + 17145441534.

It is an arithmetic number, because the mean of its divisors is an integer number (636046243560).

Almost surely, 2^{121201101222000} is an apocalyptic number.

121201101222000 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 121201101222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203534797939200).

121201101222000 is an abundant number, since it is smaller than the sum of its proper divisors (285868494656400).

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

121201101222000 is a wasteful number, since it uses less digits than its factorization.

121201101222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7802 (or 7786 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121201101222000 its reverse (222101102121), we get a palindrome (121423202324121).

The spelling of 121201101222000 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred one million, two hundred twenty-two thousand".