101220210001 has 16 divisors (see below), whose sum is σ = 106750425600. Its totient is φ = 95839083648.

The previous prime is 101220209971. The next prime is 101220210011. The reversal of 101220210001 is 100012022101.

It is a cyclic number.

It is not a de Polignac number, because 101220210001 - 2¹⁷ = 101220078929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101220210001.

It is not an unprimeable number, because it can be changed into a prime (101220210011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316485 + ... + 550093.

It is an arithmetic number, because the mean of its divisors is an integer number (6671901600).

Almost surely, 2^101220210001 is an apocalyptic number.

It is an amenable number.

101220210001 is a deficient number, since it is larger than the sum of its proper divisors (5530215599).

101220210001 is a wasteful number, since it uses less digits than its factorization.

101220210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233928.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 101220210001 its reverse (100012022101), we get a palindrome (201232232102).

The spelling of 101220210001 in words is "one hundred one billion, two hundred twenty million, two hundred ten thousand, one".