121310705404 has 24 divisors (see below), whose sum is σ = 242658218880. Its totient is φ = 51982414896.

The previous prime is 121310705401. The next prime is 121310705419. The reversal of 121310705404 is 404507013121.

It is a super-3 number, since 3×121310705404³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121310705401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138862 + ... + 511765.

It is an arithmetic number, because the mean of its divisors is an integer number (10110759120).

Almost surely, 2^121310705404 is an apocalyptic number.

121310705404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121310705404 is an abundant number, since it is smaller than the sum of its proper divisors (121347513476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121310705404 is a wasteful number, since it uses less digits than its factorization.

121310705404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657297 (or 657295 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

Adding to 121310705404 its reverse (404507013121), we get a palindrome (525817718525).

The spelling of 121310705404 in words is "one hundred twenty-one billion, three hundred ten million, seven hundred five thousand, four hundred four".