21022050135 has 16 divisors (see below), whose sum is σ = 33637699296. Its totient is φ = 11210953728.

The previous prime is 21022050131. The next prime is 21022050151. The reversal of 21022050135 is 53105022012.

It is not a de Polignac number, because 21022050135 - 2² = 21022050131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022050131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207787 + ... + 291923.

It is an arithmetic number, because the mean of its divisors is an integer number (2102356206).

Almost surely, 2^21022050135 is an apocalyptic number.

21022050135 is a deficient number, since it is larger than the sum of its proper divisors (12615649161).

21022050135 is a wasteful number, since it uses less digits than its factorization.

21022050135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100802.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 21022050135 its reverse (53105022012), we get a palindrome (74127072147).

The spelling of 21022050135 in words is "twenty-one billion, twenty-two million, fifty thousand, one hundred thirty-five".