21402432012151 has 2 divisors, whose sum is σ = 21402432012152. Its totient is φ = 21402432012150.

The previous prime is 21402432012107. The next prime is 21402432012211. The reversal of 21402432012151 is 15121023420412.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21402432012151 - 2⁷ = 21402432012023 is a prime.

It is a super-2 number, since 2×21402432012151² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21402432012251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10701216006075 + 10701216006076.

It is an arithmetic number, because the mean of its divisors is an integer number (10701216006076).

Almost surely, 2^{21402432012151} is an apocalyptic number.

21402432012151 is a deficient number, since it is larger than the sum of its proper divisors (1).

21402432012151 is an equidigital number, since it uses as much as digits as its factorization.

21402432012151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 21402432012151 its reverse (15121023420412), we get a palindrome (36523455432563).

The spelling of 21402432012151 in words is "twenty-one trillion, four hundred two billion, four hundred thirty-two million, twelve thousand, one hundred fifty-one".