121131440340204 has 24 divisors (see below), whose sum is σ = 323017174240768. Its totient is φ = 34608982954320.

The previous prime is 121131440340199. The next prime is 121131440340257. The reversal of 121131440340204 is 402043044131121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721020478132 + ... + 721020478299.

Almost surely, 2^{121131440340204} is an apocalyptic number.

121131440340204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121131440340204 is an abundant number, since it is smaller than the sum of its proper divisors (201885733900564).

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

121131440340204 is a wasteful number, since it uses less digits than its factorization.

121131440340204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442040956445 (or 1442040956443 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 121131440340204 its reverse (402043044131121), we get a palindrome (523174484471325).

The spelling of 121131440340204 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, four hundred forty million, three hundred forty thousand, two hundred four".