2028011064421 has 2 divisors, whose sum is σ = 2028011064422. Its totient is φ = 2028011064420.

The previous prime is 2028011064383. The next prime is 2028011064463. The reversal of 2028011064421 is 1244601108202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1893681484321 + 134329580100 = 1376111^2 + 366510^2 .

It is a cyclic number.

It is not a de Polignac number, because 2028011064421 - 2⁷ = 2028011064293 is a prime.

It is a super-2 number, since 2×2028011064421² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2028015064421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1014005532210 + 1014005532211.

It is an arithmetic number, because the mean of its divisors is an integer number (1014005532211).

Almost surely, 2^{2028011064421} is an apocalyptic number.

It is an amenable number.

2028011064421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2028011064421 is an equidigital number, since it uses as much as digits as its factorization.

2028011064421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 31.

The spelling of 2028011064421 in words is "two trillion, twenty-eight billion, eleven million, sixty-four thousand, four hundred twenty-one".