100130013111221 has 4 divisors (see below), whose sum is σ = 100283351569932. Its totient is φ = 99976674652512.

The previous prime is 100130013111101. The next prime is 100130013111223. The reversal of 100130013111221 is 122111310031001.

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 8421522744196 + 91708490367025 = 2901986^2 + 9576455^2 .

It is a cyclic number.

It is not a de Polignac number, because 100130013111221 - 2¹⁸ = 100130012849077 is a prime.

It is a super-2 number, since 2×100130013111221² (a number of 29 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 100130013111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100130013111223) 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, 76669228376 + ... + 76669229681.

It is an arithmetic number, because the mean of its divisors is an integer number (25070837892483).

Almost surely, 2^{100130013111221} is an apocalyptic number.

It is an amenable number.

100130013111221 is a deficient number, since it is larger than the sum of its proper divisors (153338458711).

100130013111221 is an equidigital number, since it uses as much as digits as its factorization.

100130013111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153338458710.

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

Adding to 100130013111221 its reverse (122111310031001), we get a palindrome (222241323142222).

The spelling of 100130013111221 in words is "one hundred trillion, one hundred thirty billion, thirteen million, one hundred eleven thousand, two hundred twenty-one".