210021100211021 has 8 divisors (see below), whose sum is σ = 233988691918464. Its totient is φ = 186865969239520.

The previous prime is 210021100210991. The next prime is 210021100211023. The reversal of 210021100211021 is 120112001120012.

210021100211021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 210021100211021 - 2²² = 210021096016717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210021100210987 and 210021100211005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210021100211023) 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, 203115183440 + ... + 203115184473.

It is an arithmetic number, because the mean of its divisors is an integer number (29248586489808).

Almost surely, 2^{210021100211021} is an apocalyptic number.

It is an amenable number.

210021100211021 is a deficient number, since it is larger than the sum of its proper divisors (23967591707443).

210021100211021 is a wasteful number, since it uses less digits than its factorization.

210021100211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406230367971.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210021100211021 its reverse (120112001120012), we get a palindrome (330133101331033).

The spelling of 210021100211021 in words is "two hundred ten trillion, twenty-one billion, one hundred million, two hundred eleven thousand, twenty-one".