21350133422 has 4 divisors (see below), whose sum is σ = 32025200136. Its totient is φ = 10675066710.

The previous prime is 21350133419. The next prime is 21350133437. The reversal of 21350133422 is 22433105312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21350133391 and 21350133400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5337533354 + ... + 5337533357.

It is an arithmetic number, because the mean of its divisors is an integer number (8006300034).

Almost surely, 2^21350133422 is an apocalyptic number.

21350133422 is a deficient number, since it is larger than the sum of its proper divisors (10675066714).

21350133422 is a wasteful number, since it uses less digits than its factorization.

21350133422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10675066713.

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

Adding to 21350133422 its reverse (22433105312), we get a palindrome (43783238734).

The spelling of 21350133422 in words is "twenty-one billion, three hundred fifty million, one hundred thirty-three thousand, four hundred twenty-two".