2101233421 has 4 divisors (see below), whose sum is σ = 2401409632. Its totient is φ = 1801057212.

The previous prime is 2101233383. The next prime is 2101233467. The reversal of 2101233421 is 1243321012.

It is a happy number.

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 2101233421 - 2¹⁷ = 2101102349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101233481) 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, 150088095 + ... + 150088108.

It is an arithmetic number, because the mean of its divisors is an integer number (600352408).

Almost surely, 2^2101233421 is an apocalyptic number.

It is an amenable number.

2101233421 is a deficient number, since it is larger than the sum of its proper divisors (300176211).

2101233421 is an equidigital number, since it uses as much as digits as its factorization.

2101233421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300176210.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2101233421 is about 45839.2127004817. The cubic root of 2101233421 is about 1280.8298291304.

Adding to 2101233421 its reverse (1243321012), we get a palindrome (3344554433).

The spelling of 2101233421 in words is "two billion, one hundred one million, two hundred thirty-three thousand, four hundred twenty-one".