10031111400421 has 2 divisors, whose sum is σ = 10031111400422. Its totient is φ = 10031111400420.

The previous prime is 10031111400403. The next prime is 10031111400461. The reversal of 10031111400421 is 12400411113001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9254439336321 + 776672064100 = 3042111^2 + 881290^2 .

It is a cyclic number.

It is not a de Polignac number, because 10031111400421 - 2²¹ = 10031109303269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10031111400461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5015555700210 + 5015555700211.

It is an arithmetic number, because the mean of its divisors is an integer number (5015555700211).

Almost surely, 2^{10031111400421} is an apocalyptic number.

It is an amenable number.

10031111400421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10031111400421 is an equidigital number, since it uses as much as digits as its factorization.

10031111400421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 10031111400421 its reverse (12400411113001), we get a palindrome (22431522513422).

The spelling of 10031111400421 in words is "ten trillion, thirty-one billion, one hundred eleven million, four hundred thousand, four hundred twenty-one".