21202094895 has 32 divisors (see below), whose sum is σ = 35142488064. Its totient is φ = 10904006400.

The previous prime is 21202094861. The next prime is 21202094939. The reversal of 21202094895 is 59849020212.

It is a happy number.

It is not a de Polignac number, because 21202094895 - 2¹⁷ = 21201963823 is a prime.

It is a super-2 number, since 2×21202094895² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49534 + ... + 211796.

It is an arithmetic number, because the mean of its divisors is an integer number (1098202752).

Almost surely, 2^21202094895 is an apocalyptic number.

21202094895 is a deficient number, since it is larger than the sum of its proper divisors (13940393169).

21202094895 is a wasteful number, since it uses less digits than its factorization.

21202094895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162583.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 21202094895 in words is "twenty-one billion, two hundred two million, ninety-four thousand, eight hundred ninety-five".