121131011004 has 48 divisors (see below), whose sum is σ = 283238000640. Its totient is φ = 40291534080.

The previous prime is 121131011003. The next prime is 121131011009. The reversal of 121131011004 is 400110131121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121131011003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11751717 + ... + 11762019.

It is an arithmetic number, because the mean of its divisors is an integer number (5900791680).

Almost surely, 2^121131011004 is an apocalyptic number.

It is an amenable number.

121131011004 is an abundant number, since it is smaller than the sum of its proper divisors (162106989636).

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

121131011004 is a wasteful number, since it uses less digits than its factorization.

121131011004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12290 (or 12288 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 121131011004 its reverse (400110131121), we get a palindrome (521241142125).

The spelling of 121131011004 in words is "one hundred twenty-one billion, one hundred thirty-one million, eleven thousand, four".