121001102200 has 192 divisors, whose sum is σ = 322235625600. Its totient is φ = 41847590400.

The previous prime is 121001102177. The next prime is 121001102227. The reversal of 121001102200 is 2201100121.

It is a super-2 number, since 2×121001102200² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4260447 + ... + 4288753.

It is an arithmetic number, because the mean of its divisors is an integer number (1678310550).

Almost surely, 2^121001102200 is an apocalyptic number.

121001102200 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 121001102200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161117812800).

121001102200 is an abundant number, since it is smaller than the sum of its proper divisors (201234523400).

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

121001102200 is a wasteful number, since it uses less digits than its factorization.

121001102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28430 (or 28421 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121001102200 its reverse (2201100121), we get a palindrome (123202202321).

The spelling of 121001102200 in words is "one hundred twenty-one billion, one million, one hundred two thousand, two hundred".