21053133422 has 64 divisors (see below), whose sum is σ = 34484598720. Its totient is φ = 9616029696.

The previous prime is 21053133401. The next prime is 21053133463. The reversal of 21053133422 is 22433135012.

It is a happy number.

It is a super-3 number, since 3×21053133422³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21053133391 and 21053133400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31097348 + ... + 31098024.

It is an arithmetic number, because the mean of its divisors is an integer number (538821855).

Almost surely, 2^21053133422 is an apocalyptic number.

21053133422 is a deficient number, since it is larger than the sum of its proper divisors (13431465298).

21053133422 is a wasteful number, since it uses less digits than its factorization.

21053133422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 21053133422 its reverse (22433135012), we get a palindrome (43486268434).

The spelling of 21053133422 in words is "twenty-one billion, fifty-three million, one hundred thirty-three thousand, four hundred twenty-two".