20522212534 has 4 divisors (see below), whose sum is σ = 30783318804. Its totient is φ = 10261106266.

The previous prime is 20522212517. The next prime is 20522212547. The reversal of 20522212534 is 43521222502.

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

It is a super-2 number, since 2×20522212534² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5130553132 + ... + 5130553135.

It is an arithmetic number, because the mean of its divisors is an integer number (7695829701).

Almost surely, 2^20522212534 is an apocalyptic number.

20522212534 is a deficient number, since it is larger than the sum of its proper divisors (10261106270).

20522212534 is a wasteful number, since it uses less digits than its factorization.

20522212534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10261106269.

The product of its (nonzero) digits is 9600, while the sum is 28.

The spelling of 20522212534 in words is "twenty billion, five hundred twenty-two million, two hundred twelve thousand, five hundred thirty-four".