121220102102200 has 96 divisors (see below), whose sum is σ = 297718557292800. Its totient is φ = 45773720127360.

The previous prime is 121220102102161. The next prime is 121220102102233. The reversal of 121220102102200 is 2201201022121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55285072 + ... + 57435871.

It is an arithmetic number, because the mean of its divisors is an integer number (3101234971800).

Almost surely, 2^{121220102102200} is an apocalyptic number.

121220102102200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121220102102200 is an abundant number, since it is smaller than the sum of its proper divisors (176498455190600).

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

121220102102200 is a wasteful number, since it uses less digits than its factorization.

121220102102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112721261 (or 112721252 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121220102102200 its reverse (2201201022121), we get a palindrome (123421303124321).

The spelling of 121220102102200 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred two million, one hundred two thousand, two hundred".