20211210319 has 4 divisors (see below), whose sum is σ = 20224803744. Its totient is φ = 20197616896.

The previous prime is 20211210311. The next prime is 20211210389. The reversal of 20211210319 is 91301211202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20211210319 - 2³ = 20211210311 is a prime.

It is a super-4 number, since 4×20211210319⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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 20211210319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211210311) 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, 6794482 + ... + 6797455.

It is an arithmetic number, because the mean of its divisors is an integer number (5056200936).

Almost surely, 2^20211210319 is an apocalyptic number.

20211210319 is a deficient number, since it is larger than the sum of its proper divisors (13593425).

20211210319 is a wasteful number, since it uses less digits than its factorization.

20211210319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13593424.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 20211210319 in words is "twenty billion, two hundred eleven million, two hundred ten thousand, three hundred nineteen".