100121122210200 has 576 divisors, whose sum is σ = 385920447724800. Its totient is φ = 21024309196800.

The previous prime is 100121122210199. The next prime is 100121122210223. The reversal of 100121122210200 is 2012221121001.

It is a super-2 number, since 2×100121122210200² (a number of 29 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 100121122210200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 149433546 + ... + 150102054.

It is an arithmetic number, because the mean of its divisors is an integer number (670000777300).

Almost surely, 2^{100121122210200} is an apocalyptic number.

100121122210200 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 100121122210200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192960223862400).

100121122210200 is an abundant number, since it is smaller than the sum of its proper divisors (285799325514600).

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

100121122210200 is a wasteful number, since it uses less digits than its factorization.

100121122210200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668772 (or 668750 counting only the distinct ones).

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

Adding to 100121122210200 its reverse (2012221121001), we get a palindrome (102133343331201).

The spelling of 100121122210200 in words is "one hundred trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred ten thousand, two hundred".