20522212541 has 16 divisors (see below), whose sum is σ = 22487129280. Its totient is φ = 18649463040.

The previous prime is 20522212517. The next prime is 20522212547. The reversal of 20522212541 is 14521222502.

It is a cyclic number.

It is not a de Polignac number, because 20522212541 - 2³⁴ = 3342343357 is a prime.

It is a super-2 number, since 2×20522212541² (a number of 21 digits) contains 22 as substring.

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 20522212541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522212547) 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, 42131 + ... + 206928.

It is an arithmetic number, because the mean of its divisors is an integer number (1405445580).

Almost surely, 2^20522212541 is an apocalyptic number.

It is an amenable number.

20522212541 is a deficient number, since it is larger than the sum of its proper divisors (1964916739).

20522212541 is a wasteful number, since it uses less digits than its factorization.

20522212541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249244.

The product of its (nonzero) digits is 3200, while the sum is 26.

The spelling of 20522212541 in words is "twenty billion, five hundred twenty-two million, two hundred twelve thousand, five hundred forty-one".