21196077 has 24 divisors (see below), whose sum is σ = 34610400. Its totient is φ = 11473056.

The previous prime is 21196073. The next prime is 21196081. The reversal of 21196077 is 77069112.

It is an interprime number because it is at equal distance from previous prime (21196073) and next prime (21196081).

It is not a de Polignac number, because 21196077 - 2² = 21196073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21196073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1002 + ... + 6587.

It is an arithmetic number, because the mean of its divisors is an integer number (1442100).

Almost surely, 2^21196077 is an apocalyptic number.

It is an amenable number.

21196077 is a deficient number, since it is larger than the sum of its proper divisors (13414323).

21196077 is a wasteful number, since it uses less digits than its factorization.

21196077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7625 (or 7618 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 21196077 is about 4603.9197430016. The cubic root of 21196077 is about 276.7484281182.

The spelling of 21196077 in words is "twenty-one million, one hundred ninety-six thousand, seventy-seven".