23221004 has 6 divisors (see below), whose sum is σ = 40636764. Its totient is φ = 11610500.

The previous prime is 23220991. The next prime is 23221019. The reversal of 23221004 is 40012232.

It is a self number, because there is not a number n which added to its sum of digits gives 23221004.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2902622 + ... + 2902629.

It is an arithmetic number, because the mean of its divisors is an integer number (6772794).

Almost surely, 2^23221004 is an apocalyptic number.

It is an amenable number.

23221004 is a deficient number, since it is larger than the sum of its proper divisors (17415760).

23221004 is a wasteful number, since it uses less digits than its factorization.

23221004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5805255 (or 5805253 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 23221004 is about 4818.8176973195. The cubic root of 23221004 is about 285.2946741861.

Adding to 23221004 its reverse (40012232), we get a palindrome (63233236).

The spelling of 23221004 in words is "twenty-three million, two hundred twenty-one thousand, four".