21142255310 has 16 divisors (see below), whose sum is σ = 41515701552. Its totient is φ = 7688092800.

The previous prime is 21142255307. The next prime is 21142255327. The reversal of 21142255310 is 1355224112.

It is a super-2 number, since 2×21142255310² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21142255310.

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 7 ways as a sum of consecutive naturals, for example, 96101051 + ... + 96101270.

It is an arithmetic number, because the mean of its divisors is an integer number (2594731347).

Almost surely, 2^21142255310 is an apocalyptic number.

21142255310 is a deficient number, since it is larger than the sum of its proper divisors (20373446242).

21142255310 is a wasteful number, since it uses less digits than its factorization.

21142255310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192202339.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 21142255310 its reverse (1355224112), we get a palindrome (22497479422).

The spelling of 21142255310 in words is "twenty-one billion, one hundred forty-two million, two hundred fifty-five thousand, three hundred ten".