122040521 has 4 divisors (see below), whose sum is σ = 125977344. Its totient is φ = 118103700.

The previous prime is 122040509. The next prime is 122040547. The reversal of 122040521 is 125040221.

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: 125040221 = 401 ⋅311821.

It is a cyclic number.

It is not a de Polignac number, because 122040521 - 2²² = 117846217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122040521.

It is not an unprimeable number, because it can be changed into a prime (122040571) 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, 1968365 + ... + 1968426.

It is an arithmetic number, because the mean of its divisors is an integer number (31494336).

Almost surely, 2^122040521 is an apocalyptic number.

It is an amenable number.

122040521 is a deficient number, since it is larger than the sum of its proper divisors (3936823).

122040521 is an equidigital number, since it uses as much as digits as its factorization.

122040521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936822.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 122040521 is about 11047.1951643845. The cubic root of 122040521 is about 496.0224704202.

Adding to 122040521 its reverse (125040221), we get a palindrome (247080742).

The spelling of 122040521 in words is "one hundred twenty-two million, forty thousand, five hundred twenty-one".