21142101404 has 6 divisors (see below), whose sum is σ = 36998677464. Its totient is φ = 10571050700.

The previous prime is 21142101373. The next prime is 21142101419. The reversal of 21142101404 is 40410124112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2642762672 + ... + 2642762679.

It is an arithmetic number, because the mean of its divisors is an integer number (6166446244).

Almost surely, 2^21142101404 is an apocalyptic number.

It is an amenable number.

21142101404 is a deficient number, since it is larger than the sum of its proper divisors (15856576060).

21142101404 is a wasteful number, since it uses less digits than its factorization.

21142101404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285525355 (or 5285525353 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21142101404 its reverse (40410124112), we get a palindrome (61552225516).

The spelling of 21142101404 in words is "twenty-one billion, one hundred forty-two million, one hundred one thousand, four hundred four".