6136213021 has 2 divisors, whose sum is σ = 6136213022. Its totient is φ = 6136213020.

The previous prime is 6136213007. The next prime is 6136213043. The reversal of 6136213021 is 1203126316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3582022500 + 2554190521 = 59850^2 + 50539^2 .

It is a cyclic number.

It is not a de Polignac number, because 6136213021 - 2¹³ = 6136204829 is a prime.

It is a super-2 number, since 2×6136213021² = 75306220478179892882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6136213091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3068106510 + 3068106511.

It is an arithmetic number, because the mean of its divisors is an integer number (3068106511).

Almost surely, 2^6136213021 is an apocalyptic number.

It is an amenable number.

6136213021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6136213021 is an equidigital number, since it uses as much as digits as its factorization.

6136213021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 6136213021 is about 78333.9838192850. The cubic root of 6136213021 is about 1830.7686878884.

Adding to 6136213021 its reverse (1203126316), we get a palindrome (7339339337).

The spelling of 6136213021 in words is "six billion, one hundred thirty-six million, two hundred thirteen thousand, twenty-one".