121321011 has 48 divisors (see below), whose sum is σ = 197283840. Its totient is φ = 66044160.

The previous prime is 121321001. The next prime is 121321019. The reversal of 121321011 is 110123121.

It is not a de Polignac number, because 121321011 - 2¹⁴ = 121304627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121321019) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 359835 + ... + 360171.

It is an arithmetic number, because the mean of its divisors is an integer number (4110080).

Almost surely, 2^121321011 is an apocalyptic number.

121321011 is a deficient number, since it is larger than the sum of its proper divisors (75962829).

121321011 is a wasteful number, since it uses less digits than its factorization.

121321011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 121321011 is about 11014.5817442153. The cubic root of 121321011 is about 495.0457543667.

Adding to 121321011 its reverse (110123121), we get a palindrome (231444132).

The spelling of 121321011 in words is "one hundred twenty-one million, three hundred twenty-one thousand, eleven".