21022295416 has 8 divisors (see below), whose sum is σ = 39416803920. Its totient is φ = 10511147704.

The previous prime is 21022295383. The next prime is 21022295417. The reversal of 21022295416 is 61459222012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×21022295416² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022295417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1313893456 + ... + 1313893471.

It is an arithmetic number, because the mean of its divisors is an integer number (4927100490).

Almost surely, 2^21022295416 is an apocalyptic number.

It is an amenable number.

21022295416 is a deficient number, since it is larger than the sum of its proper divisors (18394508504).

21022295416 is a wasteful number, since it uses less digits than its factorization.

21022295416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627786933 (or 2627786929 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 21022295416 in words is "twenty-one billion, twenty-two million, two hundred ninety-five thousand, four hundred sixteen".