121123211011 has 8 divisors (see below), whose sum is σ = 132559285248. Its totient is φ = 109757949000.

The previous prime is 121123211003. The next prime is 121123211029. The reversal of 121123211011 is 110112321121.

It is a happy number.

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 121123211011 - 2³ = 121123211003 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (121123211611) 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, 17699475 + ... + 17706316.

It is an arithmetic number, because the mean of its divisors is an integer number (16569910656).

Almost surely, 2^121123211011 is an apocalyptic number.

121123211011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121123211011 is a deficient number, since it is larger than the sum of its proper divisors (11436074237).

121123211011 is a wasteful number, since it uses less digits than its factorization.

121123211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35406113.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 121123211011 its reverse (110112321121), we get a palindrome (231235532132).

The spelling of 121123211011 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred eleven thousand, eleven".