20210222541 has 4 divisors (see below), whose sum is σ = 26946963392. Its totient is φ = 13473481692.

The previous prime is 20210222519. The next prime is 20210222581. The reversal of 20210222541 is 14522201202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20210222541 - 2⁶ = 20210222477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210222581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3368370421 + ... + 3368370426.

It is an arithmetic number, because the mean of its divisors is an integer number (6736740848).

Almost surely, 2^20210222541 is an apocalyptic number.

It is an amenable number.

20210222541 is a deficient number, since it is larger than the sum of its proper divisors (6736740851).

20210222541 is an equidigital number, since it uses as much as digits as its factorization.

20210222541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6736740850.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 20210222541 its reverse (14522201202), we get a palindrome (34732423743).

The spelling of 20210222541 in words is "twenty billion, two hundred ten million, two hundred twenty-two thousand, five hundred forty-one".