21401562822134 has 16 divisors (see below), whose sum is σ = 35144487368640. Its totient is φ = 9693608599560.

The previous prime is 21401562822121. The next prime is 21401562822139. The reversal of 21401562822134 is 43122826510412.

It is a junction number, because it is equal to n+sod(n) for n = 21401562822091 and 21401562822100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21401562822139) 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, 1718718704 + ... + 1718731155.

It is an arithmetic number, because the mean of its divisors is an integer number (2196530460540).

Almost surely, 2^{21401562822134} is an apocalyptic number.

21401562822134 is a deficient number, since it is larger than the sum of its proper divisors (13742924546506).

21401562822134 is a wasteful number, since it uses less digits than its factorization.

21401562822134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437450155.

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 21401562822134 in words is "twenty-one trillion, four hundred one billion, five hundred sixty-two million, eight hundred twenty-two thousand, one hundred thirty-four".