10020111121231 has 2 divisors, whose sum is σ = 10020111121232. Its totient is φ = 10020111121230.

The previous prime is 10020111121159. The next prime is 10020111121277. The reversal of 10020111121231 is 13212111102001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10020111121231 - 2²³ = 10020102732623 is a prime.

It is a super-2 number, since 2×10020111121231² (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 (10020111161231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010055560615 + 5010055560616.

It is an arithmetic number, because the mean of its divisors is an integer number (5010055560616).

Almost surely, 2^{10020111121231} is an apocalyptic number.

10020111121231 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020111121231 is an equidigital number, since it uses as much as digits as its factorization.

10020111121231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 10020111121231 its reverse (13212111102001), we get a palindrome (23232222223232).

The spelling of 10020111121231 in words is "ten trillion, twenty billion, one hundred eleven million, one hundred twenty-one thousand, two hundred thirty-one".