212201101000021 has 8 divisors (see below), whose sum is σ = 242774365292480. Its totient is φ = 181692542030688.

The previous prime is 212201100999989. The next prime is 212201101000033. The reversal of 212201101000021 is 120000101102212.

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 212201101000021 - 2⁵ = 212201100999989 is a prime.

It is a super-2 number, since 2×212201101000021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212201100999965 and 212201101000010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201101000121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16176323751 + ... + 16176336868.

It is an arithmetic number, because the mean of its divisors is an integer number (30346795661560).

Almost surely, 2^{212201101000021} is an apocalyptic number.

It is an amenable number.

212201101000021 is a deficient number, since it is larger than the sum of its proper divisors (30573264292459).

212201101000021 is an equidigital number, since it uses as much as digits as its factorization.

212201101000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32352661563.

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

Adding to 212201101000021 its reverse (120000101102212), we get a palindrome (332201202102233).

The spelling of 212201101000021 in words is "two hundred twelve trillion, two hundred one billion, one hundred one million, twenty-one", and thus it is an aban number.