101221210001 has 8 divisors (see below), whose sum is σ = 101368735200. Its totient is φ = 101073769600.

The previous prime is 101221209967. The next prime is 101221210007. The reversal of 101221210001 is 100012122101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101221210001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101221210007) 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, 2599526 + ... + 2638176.

It is an arithmetic number, because the mean of its divisors is an integer number (12671091900).

Almost surely, 2^101221210001 is an apocalyptic number.

It is an amenable number.

101221210001 is a deficient number, since it is larger than the sum of its proper divisors (147525199).

101221210001 is an equidigital number, since it uses as much as digits as its factorization.

101221210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42399.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101221210001 its reverse (100012122101), we get a palindrome (201233332102).

The spelling of 101221210001 in words is "one hundred one billion, two hundred twenty-one million, two hundred ten thousand, one".