121121230231012 has 24 divisors (see below), whose sum is σ = 231235449984000. Its totient is φ = 55054149780960.

The previous prime is 121121230231003. The next prime is 121121230231019. The reversal of 121121230231012 is 210132032121121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (121121230231019) 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, 21302887 + ... + 26382862.

It is an arithmetic number, because the mean of its divisors is an integer number (9634810416000).

Almost surely, 2^{121121230231012} is an apocalyptic number.

It is an amenable number.

121121230231012 is a deficient number, since it is larger than the sum of its proper divisors (110114219752988).

121121230231012 is a wasteful number, since it uses less digits than its factorization.

121121230231012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47743491 (or 47743489 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 121121230231012 its reverse (210132032121121), we get a palindrome (331253262352133).

The spelling of 121121230231012 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred thirty million, two hundred thirty-one thousand, twelve".