10221211210021 has 8 divisors (see below), whose sum is σ = 11681415157824. Its totient is φ = 8761014991680.

The previous prime is 10221211210009. The next prime is 10221211210069. The reversal of 10221211210021 is 12001211212201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10221211210021 - 2¹³ = 10221211201829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10221211209977 and 10221211210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221211210121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250886 + ... + 4691176.

It is an arithmetic number, because the mean of its divisors is an integer number (1460176894728).

Almost surely, 2^{10221211210021} is an apocalyptic number.

It is an amenable number.

10221211210021 is a deficient number, since it is larger than the sum of its proper divisors (1460203947803).

10221211210021 is an equidigital number, since it uses as much as digits as its factorization.

10221211210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864731.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10221211210021 its reverse (12001211212201), we get a palindrome (22222422422222).

The spelling of 10221211210021 in words is "ten trillion, two hundred twenty-one billion, two hundred eleven million, two hundred ten thousand, twenty-one".