121202020100200 has 192 divisors, whose sum is σ = 305169796632960. Its totient is φ = 44501683461120.

The previous prime is 121202020100173. The next prime is 121202020100219. The reversal of 121202020100200 is 2001020202121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 358165482 + ... + 358503718.

It is an arithmetic number, because the mean of its divisors is an integer number (1589426024130).

Almost surely, 2^{121202020100200} is an apocalyptic number.

121202020100200 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 121202020100200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152584898316480).

121202020100200 is an abundant number, since it is smaller than the sum of its proper divisors (183967776532760).

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

121202020100200 is a wasteful number, since it uses less digits than its factorization.

121202020100200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339036 (or 339027 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 121202020100200 its reverse (2001020202121), we get a palindrome (123203040302321).

The spelling of 121202020100200 in words is "one hundred twenty-one trillion, two hundred two billion, twenty million, one hundred thousand, two hundred".