121230013100 has 216 divisors, whose sum is σ = 309267549360. Its totient is φ = 41126400000.

The previous prime is 121230013007. The next prime is 121230013111. The reversal of 121230013100 is 1310032121.

It is a super-2 number, since 2×121230013100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 296405696 + ... + 296406104.

It is an arithmetic number, because the mean of its divisors is an integer number (1431794210).

Almost surely, 2^121230013100 is an apocalyptic number.

121230013100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121230013100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154633774680).

121230013100 is an abundant number, since it is smaller than the sum of its proper divisors (188037536260).

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

121230013100 is a wasteful number, since it uses less digits than its factorization.

121230013100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 915 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 121230013100 its reverse (1310032121), we get a palindrome (122540045221).

The spelling of 121230013100 in words is "one hundred twenty-one billion, two hundred thirty million, thirteen thousand, one hundred".