21220141252 has 12 divisors (see below), whose sum is σ = 37148292496. Its totient is φ = 10606343400.

The previous prime is 21220141231. The next prime is 21220141273. The reversal of 21220141252 is 25214102212.

It is an interprime number because it is at equal distance from previous prime (21220141231) and next prime (21220141273).

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, 918978 + ... + 941785.

Almost surely, 2^21220141252 is an apocalyptic number.

It is an amenable number.

21220141252 is a deficient number, since it is larger than the sum of its proper divisors (15928151244).

21220141252 is a wasteful number, since it uses less digits than its factorization.

21220141252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863618 (or 1863616 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 21220141252 its reverse (25214102212), we get a palindrome (46434243464).

The spelling of 21220141252 in words is "twenty-one billion, two hundred twenty million, one hundred forty-one thousand, two hundred fifty-two".