100121003121 has 8 divisors (see below), whose sum is σ = 133543384704. Its totient is φ = 66722978480.

The previous prime is 100121003113. The next prime is 100121003131. The reversal of 100121003121 is 121300121001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100121003121 - 2³ = 100121003113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100121003097 and 100121003106.

It is not an unprimeable number, because it can be changed into a prime (100121003131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6079641 + ... + 6096086.

It is an arithmetic number, because the mean of its divisors is an integer number (16692923088).

Almost surely, 2^100121003121 is an apocalyptic number.

It is an amenable number.

100121003121 is a deficient number, since it is larger than the sum of its proper divisors (33422381583).

100121003121 is a wasteful number, since it uses less digits than its factorization.

100121003121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12178471.

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

Adding to 100121003121 its reverse (121300121001), we get a palindrome (221421124122).

The spelling of 100121003121 in words is "one hundred billion, one hundred twenty-one million, three thousand, one hundred twenty-one".