21142202348 has 12 divisors (see below), whose sum is σ = 38946162360. Its totient is φ = 10014727392.

The previous prime is 21142202309. The next prime is 21142202351. The reversal of 21142202348 is 84320224112.

It is a super-3 number, since 3×21142202348³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21142202348.

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 3 ways as a sum of consecutive naturals, for example, 139093361 + ... + 139093512.

It is an arithmetic number, because the mean of its divisors is an integer number (3245513530).

Almost surely, 2^21142202348 is an apocalyptic number.

It is an amenable number.

21142202348 is a deficient number, since it is larger than the sum of its proper divisors (17803960012).

21142202348 is a wasteful number, since it uses less digits than its factorization.

21142202348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278186896 (or 278186894 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The spelling of 21142202348 in words is "twenty-one billion, one hundred forty-two million, two hundred two thousand, three hundred forty-eight".