121603573 has 16 divisors (see below), whose sum is σ = 150264576. Its totient is φ = 95829120.

The previous prime is 121603541. The next prime is 121603577. The reversal of 121603573 is 375306121.

It is a cyclic number.

It is not a de Polignac number, because 121603573 - 2⁵ = 121603541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121603577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21393 + ... + 26473.

It is an arithmetic number, because the mean of its divisors is an integer number (9391536).

Almost surely, 2^121603573 is an apocalyptic number.

121603573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121603573 is a deficient number, since it is larger than the sum of its proper divisors (28661003).

121603573 is a wasteful number, since it uses less digits than its factorization.

121603573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5364.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 121603573 is about 11027.4010083972. The cubic root of 121603573 is about 495.4297841984.

Adding to 121603573 its reverse (375306121), we get a palindrome (496909694).

The spelling of 121603573 in words is "one hundred twenty-one million, six hundred three thousand, five hundred seventy-three".