21400102214 has 16 divisors (see below), whose sum is σ = 34021166400. Its totient is φ = 10060927104.

The previous prime is 21400102201. The next prime is 21400102247. The reversal of 21400102214 is 41220100412.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 21400102192 and 21400102201.

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, 267569 + ... + 338220.

It is an arithmetic number, because the mean of its divisors is an integer number (2126322900).

Almost surely, 2^21400102214 is an apocalyptic number.

21400102214 is a deficient number, since it is larger than the sum of its proper divisors (12621064186).

21400102214 is a wasteful number, since it uses less digits than its factorization.

21400102214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606847.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21400102214 its reverse (41220100412), we get a palindrome (62620202626).

The spelling of 21400102214 in words is "twenty-one billion, four hundred million, one hundred two thousand, two hundred fourteen".