2021020221132 has 36 divisors (see below), whose sum is σ = 5573116368456. Its totient is φ = 612430369920.

The previous prime is 2021020221097. The next prime is 2021020221133. The reversal of 2021020221132 is 2311220201202.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2021020221132² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2021020221133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2551792813 + ... + 2551793604.

Almost surely, 2^{2021020221132} is an apocalyptic number.

2021020221132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2021020221132 is an abundant number, since it is smaller than the sum of its proper divisors (3552096147324).

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

2021020221132 is a wasteful number, since it uses less digits than its factorization.

2021020221132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5103586438 (or 5103586433 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 2021020221132 its reverse (2311220201202), we get a palindrome (4332240422334).

The spelling of 2021020221132 in words is "two trillion, twenty-one billion, twenty million, two hundred twenty-one thousand, one hundred thirty-two".