101221100009 has 8 divisors (see below), whose sum is σ = 102316079232. Its totient is φ = 100127940400.

The previous prime is 101221099999. The next prime is 101221100027. The reversal of 101221100009 is 900001122101.

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

It is a cyclic number.

It is not a de Polignac number, because 101221100009 - 2⁸ = 101221099753 is a prime.

It is a super-2 number, since 2×101221100009² (a number of 23 digits) contains 22 as substring.

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 101221100009.

It is not an unprimeable number, because it can be changed into a prime (101221100609) 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, 342899 + ... + 565704.

It is an arithmetic number, because the mean of its divisors is an integer number (12789509904).

Almost surely, 2^101221100009 is an apocalyptic number.

It is an amenable number.

101221100009 is a deficient number, since it is larger than the sum of its proper divisors (1094979223).

101221100009 is a wasteful number, since it uses less digits than its factorization.

101221100009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909807.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 101221100009 in words is "one hundred one billion, two hundred twenty-one million, one hundred thousand, nine".