121204421211 has 8 divisors (see below), whose sum is σ = 161737393680. Its totient is φ = 80737198112.

The previous prime is 121204421183. The next prime is 121204421251. The reversal of 121204421211 is 112124402121.

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 121204421211 - 2⁹ = 121204420699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121204421251) 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, 16433040 + ... + 16440413.

It is an arithmetic number, because the mean of its divisors is an integer number (20217174210).

Almost surely, 2^121204421211 is an apocalyptic number.

121204421211 is a deficient number, since it is larger than the sum of its proper divisors (40532972469).

121204421211 is a wasteful number, since it uses less digits than its factorization.

121204421211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32874685.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121204421211 its reverse (112124402121), we get a palindrome (233328823332).

The spelling of 121204421211 in words is "one hundred twenty-one billion, two hundred four million, four hundred twenty-one thousand, two hundred eleven".