2149258885421 has 2 divisors, whose sum is σ = 2149258885422. Its totient is φ = 2149258885420.

The previous prime is 2149258885379. The next prime is 2149258885439. The reversal of 2149258885421 is 1245888529412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2149258621225 + 264196 = 1466035^2 + 514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2149258885421 - 2¹⁰ = 2149258884397 is a prime.

It is a super-2 number, since 2×2149258885421² (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 (2149257885421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074629442710 + 1074629442711.

It is an arithmetic number, because the mean of its divisors is an integer number (1074629442711).

Almost surely, 2^{2149258885421} is an apocalyptic number.

It is an amenable number.

2149258885421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149258885421 is an equidigital number, since it uses as much as digits as its factorization.

2149258885421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14745600, while the sum is 59.

The spelling of 2149258885421 in words is "two trillion, one hundred forty-nine billion, two hundred fifty-eight million, eight hundred eighty-five thousand, four hundred twenty-one".