22121473 has 8 divisors (see below), whose sum is σ = 24174720. Its totient is φ = 20075280.

The previous prime is 22121447. The next prime is 22121483. The reversal of 22121473 is 37412122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22121473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6511 + ... + 9307.

It is an arithmetic number, because the mean of its divisors is an integer number (3021840).

Almost surely, 2^22121473 is an apocalyptic number.

It is an amenable number.

22121473 is a deficient number, since it is larger than the sum of its proper divisors (2053247).

22121473 is a wasteful number, since it uses less digits than its factorization.

22121473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3527.

The product of its digits is 672, while the sum is 22.

The square root of 22121473 is about 4703.3469997439. The cubic root of 22121473 is about 280.7187021312.

Adding to 22121473 its reverse (37412122), we get a palindrome (59533595).

The spelling of 22121473 in words is "twenty-two million, one hundred twenty-one thousand, four hundred seventy-three".