21140434100210 has 8 divisors (see below), whose sum is σ = 38052781380396. Its totient is φ = 8456173640080.

The previous prime is 21140434100179. The next prime is 21140434100239. The reversal of 21140434100210 is 1200143404112.

It can be written as a sum of positive squares in 2 ways, for example, as 19490732758561 + 1649701341649 = 4414831^2 + 1284407^2 .

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

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, 1057021705001 + ... + 1057021705020.

Almost surely, 2^{21140434100210} is an apocalyptic number.

21140434100210 is a deficient number, since it is larger than the sum of its proper divisors (16912347280186).

21140434100210 is a wasteful number, since it uses less digits than its factorization.

21140434100210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114043410028.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21140434100210 its reverse (1200143404112), we get a palindrome (22340577504322).

The spelling of 21140434100210 in words is "twenty-one trillion, one hundred forty billion, four hundred thirty-four million, one hundred thousand, two hundred ten".