21140205132122 has 8 divisors (see below), whose sum is σ = 32111703998400. Its totient is φ = 10436303799324.

The previous prime is 21140205132107. The next prime is 21140205132143. The reversal of 21140205132122 is 22123150204112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21140205132091 and 21140205132100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66899383172 + ... + 66899383487.

It is an arithmetic number, because the mean of its divisors is an integer number (4013962999800).

Almost surely, 2^{21140205132122} is an apocalyptic number.

21140205132122 is a deficient number, since it is larger than the sum of its proper divisors (10971498866278).

21140205132122 is a wasteful number, since it uses less digits than its factorization.

21140205132122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133798766740.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 21140205132122 its reverse (22123150204112), we get a palindrome (43263355336234).

The spelling of 21140205132122 in words is "twenty-one trillion, one hundred forty billion, two hundred five million, one hundred thirty-two thousand, one hundred twenty-two".