21213578441914 has 16 divisors (see below), whose sum is σ = 31866819747840. Its totient is φ = 10591307956080.

The previous prime is 21213578441911. The next prime is 21213578441941. The reversal of 21213578441914 is 41914487531212.

It is a super-2 number, since 2×21213578441914² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21213578441911) 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, 14794279 + ... + 16164709.

It is an arithmetic number, because the mean of its divisors is an integer number (1991676234240).

Almost surely, 2^{21213578441914} is an apocalyptic number.

21213578441914 is a deficient number, since it is larger than the sum of its proper divisors (10653241305926).

21213578441914 is a wasteful number, since it uses less digits than its factorization.

21213578441914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381725.

The product of its digits is 1935360, while the sum is 52.

The spelling of 21213578441914 in words is "twenty-one trillion, two hundred thirteen billion, five hundred seventy-eight million, four hundred forty-one thousand, nine hundred fourteen".