22700421 has 12 divisors (see below), whose sum is σ = 34515520. Its totient is φ = 14337000.

The previous prime is 22700411. The next prime is 22700441. The reversal of 22700421 is 12400722.

It is not a de Polignac number, because 22700421 - 2¹⁴ = 22684037 is a prime.

It is a super-2 number, since 2×22700421² = 1030618227154482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22700394 and 22700403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22700411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66205 + ... + 66546.

Almost surely, 2^22700421 is an apocalyptic number.

It is an amenable number.

22700421 is a deficient number, since it is larger than the sum of its proper divisors (11815099).

22700421 is a wasteful number, since it uses less digits than its factorization.

22700421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132776 (or 132773 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 22700421 is about 4764.4958809931. The cubic root of 22700421 is about 283.1465692674.

The spelling of 22700421 in words is "twenty-two million, seven hundred thousand, four hundred twenty-one".