2152036421 has 2 divisors, whose sum is σ = 2152036422. Its totient is φ = 2152036420.

The previous prime is 2152036363. The next prime is 2152036487. The reversal of 2152036421 is 1246302512.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2026260196 + 125776225 = 45014^2 + 11215^2 .

It is a cyclic number.

It is not a de Polignac number, because 2152036421 - 2²⁶ = 2084927557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2152036021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076018210 + 1076018211.

It is an arithmetic number, because the mean of its divisors is an integer number (1076018211).

Almost surely, 2^2152036421 is an apocalyptic number.

It is an amenable number.

2152036421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2152036421 is an equidigital number, since it uses as much as digits as its factorization.

2152036421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2152036421 is about 46390.0465725138. The cubic root of 2152036421 is about 1291.0702455736.

Adding to 2152036421 its reverse (1246302512), we get a palindrome (3398338933).

The spelling of 2152036421 in words is "two billion, one hundred fifty-two million, thirty-six thousand, four hundred twenty-one".