420400402132111 has 2 divisors, whose sum is σ = 420400402132112. Its totient is φ = 420400402132110.

The previous prime is 420400402132033. The next prime is 420400402132157. The reversal of 420400402132111 is 111231204004024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420400402132111 - 2⁹ = 420400402131599 is a prime.

It is a super-2 number, since 2×420400402132111² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420400402132171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210200201066055 + 210200201066056.

It is an arithmetic number, because the mean of its divisors is an integer number (210200201066056).

Almost surely, 2^{420400402132111} is an apocalyptic number.

420400402132111 is a deficient number, since it is larger than the sum of its proper divisors (1).

420400402132111 is an equidigital number, since it uses as much as digits as its factorization.

420400402132111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 420400402132111 its reverse (111231204004024), we get a palindrome (531631606136135).

The spelling of 420400402132111 in words is "four hundred twenty trillion, four hundred billion, four hundred two million, one hundred thirty-two thousand, one hundred eleven".