21166024101 has 8 divisors (see below), whose sum is σ = 29131732224. Its totient is φ = 13655499360.

The previous prime is 21166024081. The next prime is 21166024147. The reversal of 21166024101 is 10142066112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21166024101 - 2¹³ = 21166015909 is a prime.

It is a super-2 number, since 2×21166024101² (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 (21166024151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113795736 + ... + 113795921.

It is an arithmetic number, because the mean of its divisors is an integer number (3641466528).

Almost surely, 2^21166024101 is an apocalyptic number.

It is an amenable number.

21166024101 is a deficient number, since it is larger than the sum of its proper divisors (7965708123).

21166024101 is a wasteful number, since it uses less digits than its factorization.

21166024101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227591691.

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 21166024101 in words is "twenty-one billion, one hundred sixty-six million, twenty-four thousand, one hundred one".