21214553026 has 8 divisors (see below), whose sum is σ = 32681879100. Its totient is φ = 10320593328.

The previous prime is 21214552969. The next prime is 21214553027. The reversal of 21214553026 is 62035541212.

It can be written as a sum of positive squares in 2 ways, for example, as 21199068801 + 15484225 = 145599^2 + 3935^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21214553027) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 143341501 + ... + 143341648.

Almost surely, 2^21214553026 is an apocalyptic number.

21214553026 is a deficient number, since it is larger than the sum of its proper divisors (11467326074).

21214553026 is a wasteful number, since it uses less digits than its factorization.

21214553026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286683188.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 21214553026 in words is "twenty-one billion, two hundred fourteen million, five hundred fifty-three thousand, twenty-six".