102021132 has 24 divisors (see below), whose sum is σ = 239927296. Its totient is φ = 33738768.

The previous prime is 102021113. The next prime is 102021133. The reversal of 102021132 is 231120201.

It is a super-2 number, since 2×102021132² = 20816622749122848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (102021133) 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, 31948 + ... + 34995.

Almost surely, 2^102021132 is an apocalyptic number.

102021132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102021132 is an abundant number, since it is smaller than the sum of its proper divisors (137906164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102021132 is a wasteful number, since it uses less digits than its factorization.

102021132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67077 (or 67075 counting only the distinct ones).

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

The square root of 102021132 is about 10100.5510740751. The cubic root of 102021132 is about 467.2651371600.

Adding to 102021132 its reverse (231120201), we get a palindrome (333141333).

The spelling of 102021132 in words is "one hundred two million, twenty-one thousand, one hundred thirty-two".