21422020034 has 8 divisors (see below), whose sum is σ = 33241065660. Its totient is φ = 10341664816.

The previous prime is 21422019967. The next prime is 21422020049. The reversal of 21422020034 is 43002022412.

It can be written as a sum of positive squares in 2 ways, for example, as 21372978025 + 49042009 = 146195^2 + 7003^2 .

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

It is a super-2 number, since 2×21422020034² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21422019988 and 21422020015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184672529 + ... + 184672644.

Almost surely, 2^21422020034 is an apocalyptic number.

21422020034 is a deficient number, since it is larger than the sum of its proper divisors (11819045626).

21422020034 is a wasteful number, since it uses less digits than its factorization.

21422020034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369345204.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 21422020034 its reverse (43002022412), we get a palindrome (64424042446).

The spelling of 21422020034 in words is "twenty-one billion, four hundred twenty-two million, twenty thousand, thirty-four".