121450221 has 12 divisors (see below), whose sum is σ = 176203872. Its totient is φ = 80608776.

The previous prime is 121450211. The next prime is 121450229. The reversal of 121450221 is 122054121.

It is not a de Polignac number, because 121450221 - 2⁷ = 121450093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121450194 and 121450203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121450229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27681 + ... + 31766.

It is an arithmetic number, because the mean of its divisors is an integer number (14683656).

Almost surely, 2^121450221 is an apocalyptic number.

It is an amenable number.

121450221 is a deficient number, since it is larger than the sum of its proper divisors (54753651).

121450221 is a wasteful number, since it uses less digits than its factorization.

121450221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59680 (or 59677 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 121450221 is about 11020.4455899024. The cubic root of 121450221 is about 495.2214375034.

The spelling of 121450221 in words is "one hundred twenty-one million, four hundred fifty thousand, two hundred twenty-one".