121020230312 has 128 divisors (see below), whose sum is σ = 243428613120. Its totient is φ = 56284800000.

The previous prime is 121020230311. The next prime is 121020230389. The reversal of 121020230312 is 213032020121.

It is a super-2 number, since 2×121020230312² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121020230311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 482152187 + ... + 482152437.

It is an arithmetic number, because the mean of its divisors is an integer number (1901786040).

Almost surely, 2^121020230312 is an apocalyptic number.

It is an amenable number.

121020230312 is an abundant number, since it is smaller than the sum of its proper divisors (122408382808).

121020230312 is a wasteful number, since it uses less digits than its factorization.

121020230312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 121020230312 its reverse (213032020121), we get a palindrome (334052250433).

The spelling of 121020230312 in words is "one hundred twenty-one billion, twenty million, two hundred thirty thousand, three hundred twelve".