20213335351 has 4 divisors (see below), whose sum is σ = 22050911304. Its totient is φ = 18375759400.

The previous prime is 20213335343. The next prime is 20213335369. The reversal of 20213335351 is 15353331202.

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 20213335351 - 2³ = 20213335343 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 (20213335321) 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, 918787960 + ... + 918787981.

It is an arithmetic number, because the mean of its divisors is an integer number (5512727826).

Almost surely, 2^20213335351 is an apocalyptic number.

20213335351 is a deficient number, since it is larger than the sum of its proper divisors (1837575953).

20213335351 is a wasteful number, since it uses less digits than its factorization.

20213335351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837575952.

The product of its (nonzero) digits is 8100, while the sum is 28.

Adding to 20213335351 its reverse (15353331202), we get a palindrome (35566666553).

The spelling of 20213335351 in words is "twenty billion, two hundred thirteen million, three hundred thirty-five thousand, three hundred fifty-one".