122121603 has 12 divisors (see below), whose sum is σ = 176499648. Its totient is φ = 81367440.

The previous prime is 122121583. The next prime is 122121613. The reversal of 122121603 is 306121221.

It is not a de Polignac number, because 122121603 - 2⁶ = 122121539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122121613) 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, 20701 + ... + 25937.

It is an arithmetic number, because the mean of its divisors is an integer number (14708304).

Almost surely, 2^122121603 is an apocalyptic number.

122121603 is a deficient number, since it is larger than the sum of its proper divisors (54378045).

122121603 is a wasteful number, since it uses less digits than its factorization.

122121603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7834 (or 7831 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 122121603 is about 11050.8643553344. The cubic root of 122121603 is about 496.1322962115.

Adding to 122121603 its reverse (306121221), we get a palindrome (428242824).

The spelling of 122121603 in words is "one hundred twenty-two million, one hundred twenty-one thousand, six hundred three".