121321012011 has 8 divisors (see below), whose sum is σ = 162241354704. Its totient is φ = 80640672000.

The previous prime is 121321011997. The next prime is 121321012067. The reversal of 121321012011 is 110210123121.

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

It is not a de Polignac number, because 121321012011 - 2⁵ = 121321011979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121321017011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59999490 + ... + 60001511.

It is an arithmetic number, because the mean of its divisors is an integer number (20280169338).

Almost surely, 2^121321012011 is an apocalyptic number.

121321012011 is a deficient number, since it is larger than the sum of its proper divisors (40920342693).

121321012011 is a wasteful number, since it uses less digits than its factorization.

121321012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120001341.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 121321012011 its reverse (110210123121), we get a palindrome (231531135132).

It can be divided in two parts, 1213210 and 12011, that added together give a palindrome (1225221).

The spelling of 121321012011 in words is "one hundred twenty-one billion, three hundred twenty-one million, twelve thousand, eleven".