20522211504431 has 16 divisors (see below), whose sum is σ = 25282845177408. Its totient is φ = 16221450700800.

The previous prime is 20522211504367. The next prime is 20522211504437. The reversal of 20522211504431 is 13440511222502.

It is a cyclic number.

It is not a de Polignac number, because 20522211504431 - 2⁶ = 20522211504367 is a prime.

It is a super-2 number, since 2×20522211504431² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522211504437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110347250 + ... + 110533071.

It is an arithmetic number, because the mean of its divisors is an integer number (1580177823588).

Almost surely, 2^{20522211504431} is an apocalyptic number.

20522211504431 is a deficient number, since it is larger than the sum of its proper divisors (4760633672977).

20522211504431 is a wasteful number, since it uses less digits than its factorization.

20522211504431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220881362.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 20522211504431 its reverse (13440511222502), we get a palindrome (33962722726933).

The spelling of 20522211504431 in words is "twenty trillion, five hundred twenty-two billion, two hundred eleven million, five hundred four thousand, four hundred thirty-one".