121322030100 has 144 divisors (see below), whose sum is σ = 356243865600. Its totient is φ = 31873345920.

The previous prime is 121322030087. The next prime is 121322030111. The reversal of 121322030100 is 1030223121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121322030100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11346957 + ... + 11357643.

Almost surely, 2^121322030100 is an apocalyptic number.

121322030100 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 121322030100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178121932800).

121322030100 is an abundant number, since it is smaller than the sum of its proper divisors (234921835500).

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

121322030100 is a wasteful number, since it uses less digits than its factorization.

121322030100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11262 (or 11255 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 121322030100 its reverse (1030223121), we get a palindrome (122352253221).

The spelling of 121322030100 in words is "one hundred twenty-one billion, three hundred twenty-two million, thirty thousand, one hundred".