20211120253 has 8 divisors (see below), whose sum is σ = 20529080000. Its totient is φ = 19894271328.

The previous prime is 20211120247. The next prime is 20211120269. The reversal of 20211120253 is 35202111202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20211120253 - 2⁵ = 20211120221 is a prime.

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 20211120253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211120283) 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 7 ways as a sum of consecutive naturals, for example, 240993 + ... + 313846.

It is an arithmetic number, because the mean of its divisors is an integer number (2566135000).

Almost surely, 2^20211120253 is an apocalyptic number.

It is an amenable number.

20211120253 is a deficient number, since it is larger than the sum of its proper divisors (317959747).

20211120253 is an equidigital number, since it uses as much as digits as its factorization.

20211120253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555411.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 20211120253 its reverse (35202111202), we get a palindrome (55413231455).

The spelling of 20211120253 in words is "twenty billion, two hundred eleven million, one hundred twenty thousand, two hundred fifty-three".