121222212010200 has 144 divisors (see below), whose sum is σ = 465262394716080. Its totient is φ = 27707934170880.

The previous prime is 121222212010183. The next prime is 121222212010201. The reversal of 121222212010200 is 2010212222121.

It is a happy number.

121222212010200 is a `hidden beast` number, since 1 + 21 + 22 + 221 + 201 + 0 + 200 = 666.

It is a super-3 number, since 3×121222212010200³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222212010201) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4810392639 + ... + 4810417838.

It is an arithmetic number, because the mean of its divisors is an integer number (3230988852195).

Almost surely, 2^{121222212010200} is an apocalyptic number.

121222212010200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121222212010200 is an abundant number, since it is smaller than the sum of its proper divisors (344040182705880).

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

121222212010200 is a wasteful number, since it uses less digits than its factorization.

121222212010200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9620810506 (or 9620810494 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121222212010200 its reverse (2010212222121), we get a palindrome (123232424232321).

The spelling of 121222212010200 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, two hundred twelve million, ten thousand, two hundred".