101011221121099 has 4 divisors (see below), whose sum is σ = 101011291030936. Its totient is φ = 101011151211264.

The previous prime is 101011221121093. The next prime is 101011221121147. The reversal of 101011221121099 is 990121122110101.

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

It is a cyclic number.

It is not a de Polignac number, because 101011221121099 - 2²³ = 101011212732491 is a prime.

It is a super-3 number, since 3×101011221121099³ (a number of 43 digits) contains 333 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 101011221121099.

It is not an unprimeable number, because it can be changed into a prime (101011221121093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32740854 + ... + 35692939.

It is an arithmetic number, because the mean of its divisors is an integer number (25252822757734).

Almost surely, 2^{101011221121099} is an apocalyptic number.

101011221121099 is a deficient number, since it is larger than the sum of its proper divisors (69909837).

101011221121099 is an equidigital number, since it uses as much as digits as its factorization.

101011221121099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69909836.

The product of its (nonzero) digits is 648, while the sum is 31.

The spelling of 101011221121099 in words is "one hundred one trillion, eleven billion, two hundred twenty-one million, one hundred twenty-one thousand, ninety-nine".