21114476354 has 4 divisors (see below), whose sum is σ = 31671714534. Its totient is φ = 10557238176.

The previous prime is 21114476329. The next prime is 21114476381. The reversal of 21114476354 is 45367441112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13941233329 + 7173243025 = 118073^2 + 84695^2 .

It is a super-2 number, since 2×21114476354² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278619087 + ... + 5278619090.

Almost surely, 2^21114476354 is an apocalyptic number.

21114476354 is a deficient number, since it is larger than the sum of its proper divisors (10557238180).

21114476354 is a wasteful number, since it uses less digits than its factorization.

21114476354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10557238179.

The product of its digits is 80640, while the sum is 38.

The spelling of 21114476354 in words is "twenty-one billion, one hundred fourteen million, four hundred seventy-six thousand, three hundred fifty-four".