21141155404 has 6 divisors (see below), whose sum is σ = 36997021964. Its totient is φ = 10570577700.

The previous prime is 21141155393. The next prime is 21141155419. The reversal of 21141155404 is 40455114112.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2642644422 + ... + 2642644429.

Almost surely, 2^21141155404 is an apocalyptic number.

It is an amenable number.

21141155404 is a deficient number, since it is larger than the sum of its proper divisors (15855866560).

21141155404 is a wasteful number, since it uses less digits than its factorization.

21141155404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285288855 (or 5285288853 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

Adding to 21141155404 its reverse (40455114112), we get a palindrome (61596269516).

It can be divided in two parts, 211411 and 55404, that added together give a triangular number (266815 = T₇₃₀).

The spelling of 21141155404 in words is "twenty-one billion, one hundred forty-one million, one hundred fifty-five thousand, four hundred four".