421224099 has 4 divisors (see below), whose sum is σ = 561632136. Its totient is φ = 280816064.

The previous prime is 421224077. The next prime is 421224121. The reversal of 421224099 is 990422124.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (421224077) and next prime (421224121).

It is a cyclic number.

It is not a de Polignac number, because 421224099 - 2¹⁷ = 421093027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421224499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70204014 + ... + 70204019.

It is an arithmetic number, because the mean of its divisors is an integer number (140408034).

Almost surely, 2^421224099 is an apocalyptic number.

421224099 is a deficient number, since it is larger than the sum of its proper divisors (140408037).

421224099 is a wasteful number, since it uses less digits than its factorization.

421224099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140408036.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 421224099 is about 20523.7447606425. The cubic root of 421224099 is about 749.6140823464.

The spelling of 421224099 in words is "four hundred twenty-one million, two hundred twenty-four thousand, ninety-nine".