2101001222109 has 4 divisors (see below), whose sum is σ = 2801334962816. Its totient is φ = 1400667481404.

The previous prime is 2101001222071. The next prime is 2101001222143. The reversal of 2101001222109 is 9012221001012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2101001222109 - 2⁷ = 2101001221981 is a prime.

It is a super-2 number, since 2×2101001222109² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101001222809) 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, 350166870349 + ... + 350166870354.

It is an arithmetic number, because the mean of its divisors is an integer number (700333740704).

Almost surely, 2^{2101001222109} is an apocalyptic number.

It is an amenable number.

2101001222109 is a deficient number, since it is larger than the sum of its proper divisors (700333740707).

2101001222109 is an equidigital number, since it uses as much as digits as its factorization.

2101001222109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700333740706.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 2101001222109 in words is "two trillion, one hundred one billion, one million, two hundred twenty-two thousand, one hundred nine".