2135421401 has 2 divisors, whose sum is σ = 2135421402. Its totient is φ = 2135421400.

The previous prime is 2135421383. The next prime is 2135421413. The reversal of 2135421401 is 1041245312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1991301376 + 144120025 = 44624^2 + 12005^2 .

It is a cyclic number.

It is not a de Polignac number, because 2135421401 - 2²² = 2131227097 is a prime.

It is not a weakly prime, because it can be changed into another prime (2135421451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067710700 + 1067710701.

It is an arithmetic number, because the mean of its divisors is an integer number (1067710701).

Almost surely, 2^2135421401 is an apocalyptic number.

It is an amenable number.

2135421401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135421401 is an equidigital number, since it uses as much as digits as its factorization.

2135421401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2135421401 is about 46210.6200023328. The cubic root of 2135421401 is about 1287.7390440117.

Adding to 2135421401 its reverse (1041245312), we get a palindrome (3176666713).

The spelling of 2135421401 in words is "two billion, one hundred thirty-five million, four hundred twenty-one thousand, four hundred one".