120100110100021 has 8 divisors (see below), whose sum is σ = 120170501845920. Its totient is φ = 120029719614672.

The previous prime is 120100110100001. The next prime is 120100110100037. The reversal of 120100110100021 is 120001011001021.

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 120100110100021 - 2¹⁵ = 120100110067253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120100110099980 and 120100110100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120100110100001) 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, 246915766 + ... + 247401688.

It is an arithmetic number, because the mean of its divisors is an integer number (15021312730740).

Almost surely, 2^{120100110100021} is an apocalyptic number.

It is an amenable number.

120100110100021 is a deficient number, since it is larger than the sum of its proper divisors (70391745899).

120100110100021 is a wasteful number, since it uses less digits than its factorization.

120100110100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630275.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 120100110100021 its reverse (120001011001021), we get a palindrome (240101121101042).

The spelling of 120100110100021 in words is "one hundred twenty trillion, one hundred billion, one hundred ten million, one hundred thousand, twenty-one".