2141031021 has 4 divisors (see below), whose sum is σ = 2854708032. Its totient is φ = 1427354012.

The previous prime is 2141031019. The next prime is 2141031043. The reversal of 2141031021 is 1201301412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2141031021 - 2¹ = 2141031019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2141031421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356838501 + ... + 356838506.

It is an arithmetic number, because the mean of its divisors is an integer number (713677008).

Almost surely, 2^2141031021 is an apocalyptic number.

It is an amenable number.

2141031021 is a deficient number, since it is larger than the sum of its proper divisors (713677011).

2141031021 is an equidigital number, since it uses as much as digits as its factorization.

2141031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713677010.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2141031021 is about 46271.2764142076. The cubic root of 2141031021 is about 1288.8656616870.

Adding to 2141031021 its reverse (1201301412), we get a palindrome (3342332433).

The spelling of 2141031021 in words is "two billion, one hundred forty-one million, thirty-one thousand, twenty-one".