2135325421 has 2 divisors, whose sum is σ = 2135325422. Its totient is φ = 2135325420.

The previous prime is 2135325373. The next prime is 2135325449. The reversal of 2135325421 is 1245235312.

It is an a-pointer prime, because the next prime (2135325449) can be obtained adding 2135325421 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1191975625 + 943349796 = 34525^2 + 30714^2 .

It is a cyclic number.

It is not a de Polignac number, because 2135325421 - 2²³ = 2126936813 is a prime.

It is a super-2 number, since 2×2135325421² = 9119229307137654482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2135325421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2135325461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067662710 + 1067662711.

It is an arithmetic number, because the mean of its divisors is an integer number (1067662711).

Almost surely, 2^2135325421 is an apocalyptic number.

It is an amenable number.

2135325421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135325421 is an equidigital number, since it uses as much as digits as its factorization.

2135325421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 28.

The square root of 2135325421 is about 46209.5814847960. The cubic root of 2135325421 is about 1287.7197505450.

The spelling of 2135325421 in words is "two billion, one hundred thirty-five million, three hundred twenty-five thousand, four hundred twenty-one".