20152044211 has 4 divisors (see below), whose sum is σ = 21702201472. Its totient is φ = 18601886952.

The previous prime is 20152044167. The next prime is 20152044229. The reversal of 20152044211 is 11244025102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20152044211 - 2⁷ = 20152044083 is a prime.

It is a super-2 number, since 2×20152044211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20152041211) 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, 775078611 + ... + 775078636.

It is an arithmetic number, because the mean of its divisors is an integer number (5425550368).

Almost surely, 2^20152044211 is an apocalyptic number.

20152044211 is a deficient number, since it is larger than the sum of its proper divisors (1550157261).

20152044211 is a wasteful number, since it uses less digits than its factorization.

20152044211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550157260.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 20152044211 its reverse (11244025102), we get a palindrome (31396069313).

The spelling of 20152044211 in words is "twenty billion, one hundred fifty-two million, forty-four thousand, two hundred eleven".