121263603 has 8 divisors (see below), whose sum is σ = 162089616. Its totient is φ = 80640000.

The previous prime is 121263589. The next prime is 121263607. The reversal of 121263603 is 306362121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121263603 - 2⁶ = 121263539 is a prime.

It is a super-2 number, since 2×121263603² = 29409722825083218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121263607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49198 + ... + 51603.

It is an arithmetic number, because the mean of its divisors is an integer number (20261202).

Almost surely, 2^121263603 is an apocalyptic number.

121263603 is a deficient number, since it is larger than the sum of its proper divisors (40826013).

121263603 is a wasteful number, since it uses less digits than its factorization.

121263603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101205.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 121263603 is about 11011.9754358607. The cubic root of 121263603 is about 494.9676583298.

It can be divided in two parts, 12 and 1263603, that multiplied together give a square (15163236 = 3894²).

The spelling of 121263603 in words is "one hundred twenty-one million, two hundred sixty-three thousand, six hundred three".