121404373403 has 4 divisors (see below), whose sum is σ = 124227730968. Its totient is φ = 118581015840.

The previous prime is 121404373367. The next prime is 121404373469. The reversal of 121404373403 is 304373404121.

It is a happy number.

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 121404373403 - 2⁶ = 121404373339 is a prime.

It is a super-3 number, since 3×121404373403³ (a number of 34 digits) contains 333 as substring.

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 121404373403.

It is not an unprimeable number, because it can be changed into a prime (121404373303) 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, 1411678718 + ... + 1411678803.

It is an arithmetic number, because the mean of its divisors is an integer number (31056932742).

Almost surely, 2^121404373403 is an apocalyptic number.

121404373403 is a deficient number, since it is larger than the sum of its proper divisors (2823357565).

121404373403 is an equidigital number, since it uses as much as digits as its factorization.

121404373403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2823357564.

The product of its (nonzero) digits is 24192, while the sum is 32.

Adding to 121404373403 its reverse (304373404121), we get a palindrome (425777777524).

The spelling of 121404373403 in words is "one hundred twenty-one billion, four hundred four million, three hundred seventy-three thousand, four hundred three".