121200577403 has 4 divisors (see below), whose sum is σ = 121380668088. Its totient is φ = 121020486720.

The previous prime is 121200577387. The next prime is 121200577409. The reversal of 121200577403 is 304775002121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121200577403 - 2⁴ = 121200577387 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 121200577403.

It is not an unprimeable number, because it can be changed into a prime (121200577409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90044333 + ... + 90045678.

It is an arithmetic number, because the mean of its divisors is an integer number (30345167022).

Almost surely, 2^121200577403 is an apocalyptic number.

121200577403 is a deficient number, since it is larger than the sum of its proper divisors (180090685).

121200577403 is an equidigital number, since it uses as much as digits as its factorization.

121200577403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180090684.

The product of its (nonzero) digits is 11760, while the sum is 32.

Adding to 121200577403 its reverse (304775002121), we get a palindrome (425975579524).

The spelling of 121200577403 in words is "one hundred twenty-one billion, two hundred million, five hundred seventy-seven thousand, four hundred three".