121033010221 has 4 divisors (see below), whose sum is σ = 121070242944. Its totient is φ = 120995777500.

The previous prime is 121033010191. The next prime is 121033010261. The reversal of 121033010221 is 122010330121.

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: 122010330121 = 449 ⋅271737929.

It is a cyclic number.

It is not a de Polignac number, because 121033010221 - 2²⁵ = 120999455789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121033010195 and 121033010204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121033010261) 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, 18611485 + ... + 18617986.

It is an arithmetic number, because the mean of its divisors is an integer number (30267560736).

Almost surely, 2^121033010221 is an apocalyptic number.

It is an amenable number.

121033010221 is a deficient number, since it is larger than the sum of its proper divisors (37232723).

121033010221 is an equidigital number, since it uses as much as digits as its factorization.

121033010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37232722.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121033010221 its reverse (122010330121), we get a palindrome (243043340342).

The spelling of 121033010221 in words is "one hundred twenty-one billion, thirty-three million, ten thousand, two hundred twenty-one".