121540322 has 4 divisors (see below), whose sum is σ = 182310486. Its totient is φ = 60770160.

The previous prime is 121540319. The next prime is 121540333. The reversal of 121540322 is 223045121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223045121 = 13 ⋅17157317.

It can be written as a sum of positive squares in only one way, i.e., 100020001 + 21520321 = 10001^2 + 4639^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121540294 and 121540303.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30385079 + ... + 30385082.

Almost surely, 2^121540322 is an apocalyptic number.

121540322 is a deficient number, since it is larger than the sum of its proper divisors (60770164).

121540322 is an equidigital number, since it uses as much as digits as its factorization.

121540322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60770163.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 121540322 is about 11024.5327338622. The cubic root of 121540322 is about 495.3438715255.

Adding to 121540322 its reverse (223045121), we get a palindrome (344585443).

The spelling of 121540322 in words is "one hundred twenty-one million, five hundred forty thousand, three hundred twenty-two".