121231004 has 12 divisors (see below), whose sum is σ = 213506664. Its totient is φ = 60229104.

The previous prime is 121231003. The next prime is 121231013. The reversal of 121231004 is 400132121.

It is a self number, because there is not a number n which added to its sum of digits gives 121231004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121231003) 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, 95894 + ... + 97149.

It is an arithmetic number, because the mean of its divisors is an integer number (17792222).

Almost surely, 2^121231004 is an apocalyptic number.

It is an amenable number.

121231004 is a deficient number, since it is larger than the sum of its proper divisors (92275660).

121231004 is a wasteful number, since it uses less digits than its factorization.

121231004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193204 (or 193202 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 121231004 is about 11010.4951750591. The cubic root of 121231004 is about 494.9233007034.

Adding to 121231004 its reverse (400132121), we get a palindrome (521363125).

The spelling of 121231004 in words is "one hundred twenty-one million, two hundred thirty-one thousand, four".