221020210210001 has 16 divisors (see below), whose sum is σ = 221490346864128. Its totient is φ = 220550562460800.

The previous prime is 221020210209983. The next prime is 221020210210073. The reversal of 221020210210001 is 100012012020122.

It is a cyclic number.

It is not a de Polignac number, because 221020210210001 - 2²⁶ = 221020143101137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221020210210601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6635035136 + ... + 6635068446.

It is an arithmetic number, because the mean of its divisors is an integer number (13843146679008).

Almost surely, 2^{221020210210001} is an apocalyptic number.

It is an amenable number.

221020210210001 is a deficient number, since it is larger than the sum of its proper divisors (470136654127).

221020210210001 is a wasteful number, since it uses less digits than its factorization.

221020210210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40232.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221020210210001 its reverse (100012012020122), we get a palindrome (321032222230123).

The spelling of 221020210210001 in words is "two hundred twenty-one trillion, twenty billion, two hundred ten million, two hundred ten thousand, one".