23221201546 has 16 divisors (see below), whose sum is σ = 35708200704. Its totient is φ = 11320347184.

The previous prime is 23221201543. The next prime is 23221201547. The reversal of 23221201546 is 64510212232.

It is not an unprimeable number, because it can be changed into a prime (23221201541) 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, 444925 + ... + 494368.

It is an arithmetic number, because the mean of its divisors is an integer number (2231762544).

Almost surely, 2^23221201546 is an apocalyptic number.

23221201546 is a deficient number, since it is larger than the sum of its proper divisors (12486999158).

23221201546 is a wasteful number, since it uses less digits than its factorization.

23221201546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939605.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 23221201546 its reverse (64510212232), we get a palindrome (87731413778).

The spelling of 23221201546 in words is "twenty-three billion, two hundred twenty-one million, two hundred one thousand, five hundred forty-six".