6011551001021 has 2 divisors, whose sum is σ = 6011551001022. Its totient is φ = 6011551001020.

The previous prime is 6011551001011. The next prime is 6011551001059. The reversal of 6011551001021 is 1201001551106.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5920880757796 + 90670243225 = 2433286^2 + 301115^2 .

It is a cyclic number.

It is not a de Polignac number, because 6011551001021 - 2³⁰ = 6010477259197 is a prime.

It is a super-2 number, since 2×6011551001021² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6011551001011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3005775500510 + 3005775500511.

It is an arithmetic number, because the mean of its divisors is an integer number (3005775500511).

Almost surely, 2^{6011551001021} is an apocalyptic number.

It is an amenable number.

6011551001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6011551001021 is an equidigital number, since it uses as much as digits as its factorization.

6011551001021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 23.

Adding to 6011551001021 its reverse (1201001551106), we get a palindrome (7212552552127).

The spelling of 6011551001021 in words is "six trillion, eleven billion, five hundred fifty-one million, one thousand, twenty-one".