20210223444 has 24 divisors (see below), whose sum is σ = 47725349280. Its totient is φ = 6655575264.

The previous prime is 20210223431. The next prime is 20210223457. The reversal of 20210223444 is 44432201202.

It is an interprime number because it is at equal distance from previous prime (20210223431) and next prime (20210223457).

It is a super-2 number, since 2×20210223444² (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 in 7 ways as a sum of consecutive naturals, for example, 10144699 + ... + 10146690.

It is an arithmetic number, because the mean of its divisors is an integer number (1988556220).

Almost surely, 2^20210223444 is an apocalyptic number.

It is an amenable number.

20210223444 is an abundant number, since it is smaller than the sum of its proper divisors (27515125836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20210223444 is a wasteful number, since it uses less digits than its factorization.

20210223444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20291479 (or 20291477 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20210223444 its reverse (44432201202), we get a palindrome (64642424646).

The spelling of 20210223444 in words is "twenty billion, two hundred ten million, two hundred twenty-three thousand, four hundred forty-four".