21210162214 has 16 divisors (see below), whose sum is σ = 32224389120. Its totient is φ = 10468752840.

The previous prime is 21210162203. The next prime is 21210162221. The reversal of 21210162214 is 41226101212.

It is a super-2 number, since 2×21210162214² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1047147 + ... + 1067209.

It is an arithmetic number, because the mean of its divisors is an integer number (2014024320).

Almost surely, 2^21210162214 is an apocalyptic number.

21210162214 is a deficient number, since it is larger than the sum of its proper divisors (11014226906).

21210162214 is a wasteful number, since it uses less digits than its factorization.

21210162214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26835.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 21210162214 its reverse (41226101212), we get a palindrome (62436263426).

The spelling of 21210162214 in words is "twenty-one billion, two hundred ten million, one hundred sixty-two thousand, two hundred fourteen".