210101110030021 has 8 divisors (see below), whose sum is σ = 243154991717120. Its totient is φ = 177807087692208.

The previous prime is 210101110029991. The next prime is 210101110030069. The reversal of 210101110030021 is 120030011101012.

It is a happy number.

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 210101110030021 - 2¹⁵ = 210101109997253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210101110029983 and 210101110030010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210101110030081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189964836726 + ... + 189964837831.

It is an arithmetic number, because the mean of its divisors is an integer number (30394373964640).

Almost surely, 2^{210101110030021} is an apocalyptic number.

It is an amenable number.

210101110030021 is a deficient number, since it is larger than the sum of its proper divisors (33053881687099).

210101110030021 is an equidigital number, since it uses as much as digits as its factorization.

210101110030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379929674643.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 210101110030021 its reverse (120030011101012), we get a palindrome (330131121131033).

The spelling of 210101110030021 in words is "two hundred ten trillion, one hundred one billion, one hundred ten million, thirty thousand, twenty-one".