121001100222000 has 320 divisors, whose sum is σ = 400775885273088. Its totient is φ = 31385093760000.

The previous prime is 121001100221941. The next prime is 121001100222001. The reversal of 121001100222000 is 222001100121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (121001100222001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 726078685 + ... + 726245315.

Almost surely, 2^{121001100222000} is an apocalyptic number.

121001100222000 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 121001100222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200387942636544).

121001100222000 is an abundant number, since it is smaller than the sum of its proper divisors (279774785051088).

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

121001100222000 is a wasteful number, since it uses less digits than its factorization.

121001100222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169965 (or 169949 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121001100222000 its reverse (222001100121), we get a palindrome (121223101322121).

It can be divided in two parts, 121001 and 100222000, that added together give a palindrome (100343001).

The spelling of 121001100222000 in words is "one hundred twenty-one trillion, one billion, one hundred million, two hundred twenty-two thousand".