121211202200010 has 384 divisors, whose sum is σ = 321642374860800. Its totient is φ = 29055688796160.

The previous prime is 121211202200009. The next prime is 121211202200029. The reversal of 121211202200010 is 10002202112121.

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

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 103510846725 + ... + 103510847895.

It is an arithmetic number, because the mean of its divisors is an integer number (837610351200).

Almost surely, 2^{121211202200010} is an apocalyptic number.

121211202200010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121211202200010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160821187430400).

121211202200010 is an abundant number, since it is smaller than the sum of its proper divisors (200431172660790).

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

121211202200010 is a wasteful number, since it uses less digits than its factorization.

121211202200010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726 (or 1589 counting only the distinct ones).

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

Adding to 121211202200010 its reverse (10002202112121), we get a palindrome (131213404312131).

The spelling of 121211202200010 in words is "one hundred twenty-one trillion, two hundred eleven billion, two hundred two million, two hundred thousand, ten".