102132021 has 8 divisors (see below), whose sum is σ = 137078464. Its totient is φ = 67636800.

The previous prime is 102131969. The next prime is 102132031. The reversal of 102132021 is 120231201.

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

It is not a de Polignac number, because 102132021 - 2⁶ = 102131957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102131988 and 102132006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102132031) 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 7 ways as a sum of consecutive naturals, for example, 112276 + ... + 113181.

It is an arithmetic number, because the mean of its divisors is an integer number (17134808).

Almost surely, 2^102132021 is an apocalyptic number.

It is an amenable number.

102132021 is a deficient number, since it is larger than the sum of its proper divisors (34946443).

102132021 is a wasteful number, since it uses less digits than its factorization.

102132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225611.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 102132021 is about 10106.0388382392. The cubic root of 102132021 is about 467.4343694269.

Adding to 102132021 its reverse (120231201), we get a palindrome (222363222).

The spelling of 102132021 in words is "one hundred two million, one hundred thirty-two thousand, twenty-one".