121002030100 has 288 divisors, whose sum is σ = 325359175680. Its totient is φ = 38135784960.

The previous prime is 121002030049. The next prime is 121002030101. The reversal of 121002030100 is 1030200121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002030101) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 98938089 + ... + 98939311.

It is an arithmetic number, because the mean of its divisors is an integer number (1129719360).

Almost surely, 2^121002030100 is an apocalyptic number.

121002030100 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 121002030100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162679587840).

121002030100 is an abundant number, since it is smaller than the sum of its proper divisors (204357145580).

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

121002030100 is a wasteful number, since it uses less digits than its factorization.

121002030100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479 (or 1472 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 121002030100 its reverse (1030200121), we get a palindrome (122032230221).

The spelling of 121002030100 in words is "one hundred twenty-one billion, two million, thirty thousand, one hundred".