22020477 has 4 divisors (see below), whose sum is σ = 29360640. Its totient is φ = 14680316.

The previous prime is 22020443. The next prime is 22020497. The reversal of 22020477 is 77402022.

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 a cyclic number.

It is not a de Polignac number, because 22020477 - 2⁶ = 22020413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020497) 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, 3670077 + ... + 3670082.

It is an arithmetic number, because the mean of its divisors is an integer number (7340160).

Almost surely, 2^22020477 is an apocalyptic number.

It is an amenable number.

22020477 is a deficient number, since it is larger than the sum of its proper divisors (7340163).

22020477 is an equidigital number, since it uses as much as digits as its factorization.

22020477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7340162.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 22020477 is about 4692.5981076585. The cubic root of 22020477 is about 280.2908415001.

Adding to 22020477 its reverse (77402022), we get a palindrome (99422499).

The spelling of 22020477 in words is "twenty-two million, twenty thousand, four hundred seventy-seven".