2100331421 has 8 divisors (see below), whose sum is σ = 2223093600. Its totient is φ = 1978791120.

The previous prime is 2100331393. The next prime is 2100331423. The reversal of 2100331421 is 1241330012.

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

It is a cyclic number.

It is not a de Polignac number, because 2100331421 - 2⁶ = 2100331357 is a prime.

It is a super-2 number, since 2×2100331421² = 8822784156079758482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2100331421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100331423) 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, 301931 + ... + 308808.

It is an arithmetic number, because the mean of its divisors is an integer number (277886700).

Almost surely, 2^2100331421 is an apocalyptic number.

It is an amenable number.

2100331421 is a deficient number, since it is larger than the sum of its proper divisors (122762179).

2100331421 is a wasteful number, since it uses less digits than its factorization.

2100331421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610939.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2100331421 is about 45829.3729064669. The cubic root of 2100331421 is about 1280.6465282419.

Adding to 2100331421 its reverse (1241330012), we get a palindrome (3341661433).

The spelling of 2100331421 in words is "two billion, one hundred million, three hundred thirty-one thousand, four hundred twenty-one".