22601421 has 6 divisors (see below), whose sum is σ = 32646510. Its totient is φ = 15067608.

The previous prime is 22601419. The next prime is 22601437. The reversal of 22601421 is 12410622.

22601421 is a `hidden beast` number, since 22 + 601 + 42 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16281225 + 6320196 = 4035^2 + 2514^2 .

It is not a de Polignac number, because 22601421 - 2¹ = 22601419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22601394 and 22601403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22601401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1255626 + ... + 1255643.

It is an arithmetic number, because the mean of its divisors is an integer number (5441085).

Almost surely, 2^22601421 is an apocalyptic number.

It is an amenable number.

22601421 is a deficient number, since it is larger than the sum of its proper divisors (10045089).

22601421 is a wasteful number, since it uses less digits than its factorization.

22601421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511275 (or 2511272 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 22601421 is about 4754.0951820509. The cubic root of 22601421 is about 282.7343543093.

The spelling of 22601421 in words is "twenty-two million, six hundred one thousand, four hundred twenty-one".