120121102321 has 4 divisors (see below), whose sum is σ = 131041202544. Its totient is φ = 109201002100.

The previous prime is 120121102289. The next prime is 120121102327. The reversal of 120121102321 is 123201121021.

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: 123201121021 = 11 ⋅11200101911.

It is a cyclic number.

It is not a de Polignac number, because 120121102321 - 2⁵ = 120121102289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120121102295 and 120121102304.

It is not an unprimeable number, because it can be changed into a prime (120121102327) 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, 5460050095 + ... + 5460050116.

It is an arithmetic number, because the mean of its divisors is an integer number (32760300636).

Almost surely, 2^120121102321 is an apocalyptic number.

120121102321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120121102321 is a deficient number, since it is larger than the sum of its proper divisors (10920100223).

120121102321 is a wasteful number, since it uses less digits than its factorization.

120121102321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10920100222.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 120121102321 its reverse (123201121021), we get a palindrome (243322223342).

The spelling of 120121102321 in words is "one hundred twenty billion, one hundred twenty-one million, one hundred two thousand, three hundred twenty-one".