210100110120021 has 32 divisors (see below), whose sum is σ = 316143717724800. Its totient is φ = 122940407233280.

The previous prime is 210100110120011. The next prime is 210100110120031. The reversal of 210100110120021 is 120021011001012.

It is an interprime number because it is at equal distance from previous prime (210100110120011) and next prime (210100110120031).

It is a cyclic number.

It is not a de Polignac number, because 210100110120021 - 2⁹ = 210100110119509 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 210100110119979 and 210100110120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210100110120011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52699495 + ... + 56545883.

It is an arithmetic number, because the mean of its divisors is an integer number (9879491178900).

Almost surely, 2^{210100110120021} is an apocalyptic number.

It is an amenable number.

210100110120021 is a deficient number, since it is larger than the sum of its proper divisors (106043607604779).

210100110120021 is a wasteful number, since it uses less digits than its factorization.

210100110120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903509.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 210100110120021 its reverse (120021011001012), we get a palindrome (330121121121033).

The spelling of 210100110120021 in words is "two hundred ten trillion, one hundred billion, one hundred ten million, one hundred twenty thousand, twenty-one".