121310030100 has 108 divisors (see below), whose sum is σ = 408294950784. Its totient is φ = 27728003520.

The previous prime is 121310030081. The next prime is 121310030117. The reversal of 121310030100 is 1030013121.

It is a super-2 number, since 2×121310030100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4111492 + ... + 4140891.

Almost surely, 2^121310030100 is an apocalyptic number.

121310030100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121310030100 is an abundant number, since it is smaller than the sum of its proper divisors (286984920684).

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

121310030100 is a wasteful number, since it uses less digits than its factorization.

121310030100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8252414 (or 8252400 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 121310030100 its reverse (1030013121), we get a palindrome (122340043221).

The spelling of 121310030100 in words is "one hundred twenty-one billion, three hundred ten million, thirty thousand, one hundred".