210102011200021 has 8 divisors (see below), whose sum is σ = 210243327053760. Its totient is φ = 209960703745152.

The previous prime is 210102011199959. The next prime is 210102011200043. The reversal of 210102011200021 is 120002110201012.

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 210102011200021 - 2¹⁵ = 210102011167253 is a prime.

It is a super-2 number, since 2×210102011200021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210102011199974 and 210102011200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210102011240021) 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, 48355566 + ... + 52521088.

It is an arithmetic number, because the mean of its divisors is an integer number (26280415881720).

Almost surely, 2^{210102011200021} is an apocalyptic number.

It is an amenable number.

210102011200021 is a deficient number, since it is larger than the sum of its proper divisors (141315853739).

210102011200021 is a wasteful number, since it uses less digits than its factorization.

210102011200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4199435.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210102011200021 its reverse (120002110201012), we get a palindrome (330104121401033).

Subtracting from 210102011200021 its reverse (120002110201012), we obtain a palindrome (90099900999009).

The spelling of 210102011200021 in words is "two hundred ten trillion, one hundred two billion, eleven million, two hundred thousand, twenty-one".