99001221101 has 4 divisors (see below), whose sum is σ = 99281678172. Its totient is φ = 98720764032.

The previous prime is 99001221083. The next prime is 99001221107. The reversal of 99001221101 is 10112210099.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38113191076 + 60888030025 = 195226^2 + 246755^2 .

It is a cyclic number.

It is not a de Polignac number, because 99001221101 - 2²² = 98997026797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99001221107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140228006 + ... + 140228711.

It is an arithmetic number, because the mean of its divisors is an integer number (24820419543).

Almost surely, 2^99001221101 is an apocalyptic number.

It is an amenable number.

99001221101 is a deficient number, since it is larger than the sum of its proper divisors (280457071).

99001221101 is a wasteful number, since it uses less digits than its factorization.

99001221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280457070.

The product of its (nonzero) digits is 324, while the sum is 26.

The spelling of 99001221101 in words is "ninety-nine billion, one million, two hundred twenty-one thousand, one hundred one".