121020111202200 has 576 divisors, whose sum is σ = 442900127577600. Its totient is φ = 27252105753600.

The previous prime is 121020111202057. The next prime is 121020111202213. The reversal of 121020111202200 is 2202111020121.

It is a super-3 number, since 3×121020111202200³ (a number of 43 digits) contains 333 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 121020111202200.

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, 1070662087 + ... + 1070775113.

It is an arithmetic number, because the mean of its divisors is an integer number (768923832600).

Almost surely, 2^{121020111202200} is an apocalyptic number.

121020111202200 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 121020111202200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221450063788800).

121020111202200 is an abundant number, since it is smaller than the sum of its proper divisors (321880016375400).

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

121020111202200 is a wasteful number, since it uses less digits than its factorization.

121020111202200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113600 (or 113584 counting only the distinct ones).

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

Adding to 121020111202200 its reverse (2202111020121), we get a palindrome (123222222222321).

The spelling of 121020111202200 in words is "one hundred twenty-one trillion, twenty billion, one hundred eleven million, two hundred two thousand, two hundred".