21223210320202 has 16 divisors (see below), whose sum is σ = 34728990993792. Its totient is φ = 9646885621120.

The previous prime is 21223210320133. The next prime is 21223210320203. The reversal of 21223210320202 is 20202301232212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (21223210320203) 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, 7572543 + ... + 9989485.

It is an arithmetic number, because the mean of its divisors is an integer number (2170561937112).

Almost surely, 2^{21223210320202} is an apocalyptic number.

21223210320202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21223210320202 is a deficient number, since it is larger than the sum of its proper divisors (13505780673590).

21223210320202 is a wasteful number, since it uses less digits than its factorization.

21223210320202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2816093.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21223210320202 its reverse (20202301232212), we get a palindrome (41425511552414).

The spelling of 21223210320202 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred ten million, three hundred twenty thousand, two hundred two".