2012451421 has 8 divisors (see below), whose sum is σ = 2062126584. Its totient is φ = 1962804480.

The previous prime is 2012451319. The next prime is 2012451437. The reversal of 2012451421 is 1241542102.

It can be written as a sum of positive squares in 4 ways, for example, as 57927321 + 1954524100 = 7611^2 + 44210^2 .

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

It is not a de Polignac number, because 2012451421 - 2²⁵ = 1978896989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012451392 and 2012451401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012451821) 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, 258441 + ... + 266113.

It is an arithmetic number, because the mean of its divisors is an integer number (257765823).

Almost surely, 2^2012451421 is an apocalyptic number.

It is an amenable number.

2012451421 is a deficient number, since it is larger than the sum of its proper divisors (49675163).

2012451421 is an equidigital number, since it uses as much as digits as its factorization.

2012451421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14111.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2012451421 is about 44860.3546686827. The cubic root of 2012451421 is about 1262.5302771682.

Adding to 2012451421 its reverse (1241542102), we get a palindrome (3253993523).

The spelling of 2012451421 in words is "two billion, twelve million, four hundred fifty-one thousand, four hundred twenty-one".