22121498 has 8 divisors (see below), whose sum is σ = 37922592. Its totient is φ = 9480636.

The previous prime is 22121483. The next prime is 22121503. The reversal of 22121498 is 89412122.

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

It is a super-4 number, since 4×22121498⁴ (a number of 30 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22121498.

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, 790040 + ... + 790067.

It is an arithmetic number, because the mean of its divisors is an integer number (4740324).

Almost surely, 2^22121498 is an apocalyptic number.

22121498 is a deficient number, since it is larger than the sum of its proper divisors (15801094).

22121498 is a wasteful number, since it uses less digits than its factorization.

22121498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580116.

The product of its digits is 2304, while the sum is 29.

The square root of 22121498 is about 4703.3496574250. The cubic root of 22121498 is about 280.7188078801.

The spelling of 22121498 in words is "twenty-two million, one hundred twenty-one thousand, four hundred ninety-eight".