12121012221099 has 8 divisors (see below), whose sum is σ = 16682683487232. Its totient is φ = 7820007884520.

The previous prime is 12121012221089. The next prime is 12121012221107. The reversal of 12121012221099 is 99012221012121.

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

It is not a de Polignac number, because 12121012221099 - 2⁷ = 12121012220971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12121012221089) 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, 65166732279 + ... + 65166732464.

It is an arithmetic number, because the mean of its divisors is an integer number (2085335435904).

Almost surely, 2^{12121012221099} is an apocalyptic number.

12121012221099 is a deficient number, since it is larger than the sum of its proper divisors (4561671266133).

12121012221099 is a wasteful number, since it uses less digits than its factorization.

12121012221099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130333464777.

The product of its (nonzero) digits is 2592, while the sum is 33.

The spelling of 12121012221099 in words is "twelve trillion, one hundred twenty-one billion, twelve million, two hundred twenty-one thousand, ninety-nine".