100012210221001 has 4 divisors (see below), whose sum is σ = 107705457161092. Its totient is φ = 92318963280912.

The previous prime is 100012210220983. The next prime is 100012210221067. The reversal of 100012210221001 is 100122012210001.

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 15951716481600 + 84060493739401 = 3993960^2 + 9168451^2 .

It is a cyclic number.

It is not a de Polignac number, because 100012210221001 - 2¹¹ = 100012210218953 is a prime.

It is a super-2 number, since 2×100012210221001² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 7693246940077 = 100012210221001 / (1 + 0 + 0 + 0 + 1 + 2 + 2 + 1 + 0 + 2 + 2 + 1 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100012210221101) 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, 3846623470026 + ... + 3846623470051.

It is an arithmetic number, because the mean of its divisors is an integer number (26926364290273).

Almost surely, 2^{100012210221001} is an apocalyptic number.

It is an amenable number.

100012210221001 is a deficient number, since it is larger than the sum of its proper divisors (7693246940091).

100012210221001 is an equidigital number, since it uses as much as digits as its factorization.

100012210221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7693246940090.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100012210221001 its reverse (100122012210001), we get a palindrome (200134222431002).

The spelling of 100012210221001 in words is "one hundred trillion, twelve billion, two hundred ten million, two hundred twenty-one thousand, one".