20135222502 has 8 divisors (see below), whose sum is σ = 40270445016. Its totient is φ = 6711740832.

The previous prime is 20135222489. The next prime is 20135222509. The reversal of 20135222502 is 20522253102.

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

20135222502 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135222509) 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, 1677935203 + ... + 1677935214.

It is an arithmetic number, because the mean of its divisors is an integer number (5033805627).

Almost surely, 2^20135222502 is an apocalyptic number.

20135222502 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20135222502 is a wasteful number, since it uses less digits than its factorization.

20135222502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3355870422.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 20135222502 its reverse (20522253102), we get a palindrome (40657475604).

The spelling of 20135222502 in words is "twenty billion, one hundred thirty-five million, two hundred twenty-two thousand, five hundred two".