101220100001 has 16 divisors (see below), whose sum is σ = 102909139200. Its totient is φ = 99546737808.

The previous prime is 101220099979. The next prime is 101220100117. The reversal of 101220100001 is 100001022101.

It is not a de Polignac number, because 101220100001 - 2¹⁰ = 101220098977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101220100301) 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, 12311270 + ... + 12319488.

It is an arithmetic number, because the mean of its divisors is an integer number (6431821200).

Almost surely, 2^101220100001 is an apocalyptic number.

It is an amenable number.

101220100001 is a deficient number, since it is larger than the sum of its proper divisors (1689039199).

101220100001 is a wasteful number, since it uses less digits than its factorization.

101220100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9148.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 101220100001 its reverse (100001022101), we get a palindrome (201221122102).

The spelling of 101220100001 in words is "one hundred one billion, two hundred twenty million, one hundred thousand, one".