21400032214 has 16 divisors (see below), whose sum is σ = 35098018560. Its totient is φ = 9705125160.

The previous prime is 21400032211. The next prime is 21400032221. The reversal of 21400032214 is 41223000412.

It is a super-2 number, since 2×21400032214² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21400032191 and 21400032200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21400032211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098234 + ... + 1117549.

It is an arithmetic number, because the mean of its divisors is an integer number (2193626160).

Almost surely, 2^21400032214 is an apocalyptic number.

21400032214 is a deficient number, since it is larger than the sum of its proper divisors (13697986346).

21400032214 is a wasteful number, since it uses less digits than its factorization.

21400032214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216235.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21400032214 its reverse (41223000412), we get a palindrome (62623032626).

The spelling of 21400032214 in words is "twenty-one billion, four hundred million, thirty-two thousand, two hundred fourteen".