421011440371 has 2 divisors, whose sum is σ = 421011440372. Its totient is φ = 421011440370.

The previous prime is 421011440357. The next prime is 421011440449. The reversal of 421011440371 is 173044110124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421011440371 is a prime.

It is not a weakly prime, because it can be changed into another prime (421011440341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210505720185 + 210505720186.

It is an arithmetic number, because the mean of its divisors is an integer number (210505720186).

Almost surely, 2^421011440371 is an apocalyptic number.

421011440371 is a deficient number, since it is larger than the sum of its proper divisors (1).

421011440371 is an equidigital number, since it uses as much as digits as its factorization.

421011440371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

Adding to 421011440371 its reverse (173044110124), we get a palindrome (594055550495).

The spelling of 421011440371 in words is "four hundred twenty-one billion, eleven million, four hundred forty thousand, three hundred seventy-one".