121000201321 has 4 divisors (see below), whose sum is σ = 122131044432. Its totient is φ = 119869358212.

The previous prime is 121000201319. The next prime is 121000201339. The reversal of 121000201321 is 123102000121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123102000121 = 241 ⋅510796681.

It is a cyclic number.

It is not a de Polignac number, because 121000201321 - 2¹ = 121000201319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121000202321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565421395 + ... + 565421608.

It is an arithmetic number, because the mean of its divisors is an integer number (30532761108).

Almost surely, 2^121000201321 is an apocalyptic number.

It is an amenable number.

121000201321 is a deficient number, since it is larger than the sum of its proper divisors (1130843111).

121000201321 is a wasteful number, since it uses less digits than its factorization.

121000201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130843110.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121000201321 its reverse (123102000121), we get a palindrome (244102201442).

The spelling of 121000201321 in words is "one hundred twenty-one billion, two hundred one thousand, three hundred twenty-one".