210021012202021 has 8 divisors (see below), whose sum is σ = 210046742784000. Its totient is φ = 209995283154048.

The previous prime is 210021012201997. The next prime is 210021012202031. The reversal of 210021012202021 is 120202210120012.

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 210021012202021 - 2⁵ = 210021012201989 is a prime.

It is a super-2 number, since 2×210021012202021² (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 = 210021012201986 and 210021012202004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210021012202031) 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, 286447125 + ... + 287179381.

It is an arithmetic number, because the mean of its divisors is an integer number (26255842848000).

Almost surely, 2^{210021012202021} is an apocalyptic number.

It is an amenable number.

210021012202021 is a deficient number, since it is larger than the sum of its proper divisors (25730581979).

210021012202021 is a wasteful number, since it uses less digits than its factorization.

210021012202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767003.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210021012202021 its reverse (120202210120012), we get a palindrome (330223222322033).

The spelling of 210021012202021 in words is "two hundred ten trillion, twenty-one billion, twelve million, two hundred two thousand, twenty-one".