21214214043 has 16 divisors (see below), whose sum is σ = 31112061312. Its totient is φ = 12857097000.

The previous prime is 21214214041. The next prime is 21214214051. The reversal of 21214214043 is 34041241212.

It is not a de Polignac number, because 21214214043 - 2¹ = 21214214041 is a prime.

It is a super-3 number, since 3×21214214043³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21214214041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2652433 + ... + 2660418.

It is an arithmetic number, because the mean of its divisors is an integer number (1944503832).

Almost surely, 2^21214214043 is an apocalyptic number.

21214214043 is a deficient number, since it is larger than the sum of its proper divisors (9897847269).

21214214043 is an equidigital number, since it uses as much as digits as its factorization.

21214214043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5312887 (or 5312865 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21214214043 its reverse (34041241212), we get a palindrome (55255455255).

The spelling of 21214214043 in words is "twenty-one billion, two hundred fourteen million, two hundred fourteen thousand, forty-three".