20001210112031 has 2 divisors, whose sum is σ = 20001210112032. Its totient is φ = 20001210112030.

The previous prime is 20001210112003. The next prime is 20001210112043. The reversal of 20001210112031 is 13021101210002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20001210112031 - 2²² = 20001205917727 is a prime.

It is a super-2 number, since 2×20001210112031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20001210111997 and 20001210112015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001210142031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000605056015 + 10000605056016.

It is an arithmetic number, because the mean of its divisors is an integer number (10000605056016).

Almost surely, 2^{20001210112031} is an apocalyptic number.

20001210112031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001210112031 is an equidigital number, since it uses as much as digits as its factorization.

20001210112031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20001210112031 its reverse (13021101210002), we get a palindrome (33022311322033).

The spelling of 20001210112031 in words is "twenty trillion, one billion, two hundred ten million, one hundred twelve thousand, thirty-one".