121211200099 has 8 divisors (see below), whose sum is σ = 132375559680. Its totient is φ = 110071033800.

The previous prime is 121211200091. The next prime is 121211200109. The reversal of 121211200099 is 990002112121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121211200099 - 2³ = 121211200091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121211200091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6037839 + ... + 6057880.

It is an arithmetic number, because the mean of its divisors is an integer number (16546944960).

Almost surely, 2^121211200099 is an apocalyptic number.

121211200099 is a deficient number, since it is larger than the sum of its proper divisors (11164359581).

121211200099 is a wasteful number, since it uses less digits than its factorization.

121211200099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12096641.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 121211200099 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred thousand, ninety-nine".