20344022011 has 4 divisors (see below), whose sum is σ = 20376995112. Its totient is φ = 20311048912.

The previous prime is 20344022003. The next prime is 20344022059. The reversal of 20344022011 is 11022044302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11022044302 = 2 ⋅5511022151.

It is a cyclic number.

It is not a de Polignac number, because 20344022011 - 2³ = 20344022003 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 20344022011.

It is not an unprimeable number, because it can be changed into a prime (20344025011) 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, 16485625 + ... + 16486858.

It is an arithmetic number, because the mean of its divisors is an integer number (5094248778).

Almost surely, 2^20344022011 is an apocalyptic number.

20344022011 is a deficient number, since it is larger than the sum of its proper divisors (32973101).

20344022011 is an equidigital number, since it uses as much as digits as its factorization.

20344022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32973100.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20344022011 its reverse (11022044302), we get a palindrome (31366066313).

The spelling of 20344022011 in words is "twenty billion, three hundred forty-four million, twenty-two thousand, eleven".