21114214012 has 18 divisors (see below), whose sum is σ = 37752784832. Its totient is φ = 10332483384.

The previous prime is 21114214001. The next prime is 21114214031. The reversal of 21114214012 is 21041241112.

It is a happy number.

It is a super-2 number, since 2×21114214012² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1185948 + ... + 1203619.

Almost surely, 2^21114214012 is an apocalyptic number.

It is an amenable number.

21114214012 is a deficient number, since it is larger than the sum of its proper divisors (16638570820).

21114214012 is a wasteful number, since it uses less digits than its factorization.

21114214012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389665 (or 2389616 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21114214012 its reverse (21041241112), we get a palindrome (42155455124).

The spelling of 21114214012 in words is "twenty-one billion, one hundred fourteen million, two hundred fourteen thousand, twelve".