20213310109 has 4 divisors (see below), whose sum is σ = 20214955360. Its totient is φ = 20211664860.

The previous prime is 20213310101. The next prime is 20213310121. The reversal of 20213310109 is 90101331202.

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 a cyclic number.

It is not a de Polignac number, because 20213310109 - 2³ = 20213310101 is a prime.

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 20213310109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213310101) 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, 804057 + ... + 828814.

It is an arithmetic number, because the mean of its divisors is an integer number (5053738840).

Almost surely, 2^20213310109 is an apocalyptic number.

It is an amenable number.

20213310109 is a deficient number, since it is larger than the sum of its proper divisors (1645251).

20213310109 is a wasteful number, since it uses less digits than its factorization.

20213310109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645250.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 20213310109 in words is "twenty billion, two hundred thirteen million, three hundred ten thousand, one hundred nine".