121935245803 has 4 divisors (see below), whose sum is σ = 139354566640. Its totient is φ = 104515924968.

The previous prime is 121935245797. The next prime is 121935245827. The reversal of 121935245803 is 308542539121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 308542539121 = 3041 ⋅101460881.

It is not a de Polignac number, because 121935245803 - 2²¹ = 121933148651 is a prime.

It is a super-2 number, since 2×121935245803² (a number of 23 digits) contains 22 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 121935245803.

It is not an unprimeable number, because it can be changed into a prime (121935245833) 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, 8709660408 + ... + 8709660421.

It is an arithmetic number, because the mean of its divisors is an integer number (34838641660).

Almost surely, 2^121935245803 is an apocalyptic number.

121935245803 is a deficient number, since it is larger than the sum of its proper divisors (17419320837).

121935245803 is an equidigital number, since it uses as much as digits as its factorization.

121935245803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17419320836.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 121935245803 in words is "one hundred twenty-one billion, nine hundred thirty-five million, two hundred forty-five thousand, eight hundred three".