20213534100252 has 24 divisors (see below), whose sum is σ = 47236266796432. Its totient is φ = 6727651286400.

The previous prime is 20213534100247. The next prime is 20213534100359. The reversal of 20213534100252 is 25200143531202.

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, 1274168449 + ... + 1274184312.

Almost surely, 2^{20213534100252} is an apocalyptic number.

It is an amenable number.

20213534100252 is an abundant number, since it is smaller than the sum of its proper divisors (27022732696180).

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

20213534100252 is a wasteful number, since it uses less digits than its factorization.

20213534100252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548353429 (or 2548353427 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 20213534100252 its reverse (25200143531202), we get a palindrome (45413677631454).

The spelling of 20213534100252 in words is "twenty trillion, two hundred thirteen billion, five hundred thirty-four million, one hundred thousand, two hundred fifty-two".