21142203310 has 32 divisors (see below), whose sum is σ = 38245027392. Its totient is φ = 8414918400.

The previous prime is 21142203307. The next prime is 21142203343. The reversal of 21142203310 is 1330224112.

It is a happy number.

It is a super-2 number, since 2×21142203310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5942052 + ... + 5945608.

It is an arithmetic number, because the mean of its divisors is an integer number (1195157106).

Almost surely, 2^21142203310 is an apocalyptic number.

21142203310 is a deficient number, since it is larger than the sum of its proper divisors (17102824082).

21142203310 is a wasteful number, since it uses less digits than its factorization.

21142203310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6348.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21142203310 its reverse (1330224112), we get a palindrome (22472427422).

The spelling of 21142203310 in words is "twenty-one billion, one hundred forty-two million, two hundred three thousand, three hundred ten".