211031020001 has 2 divisors, whose sum is σ = 211031020002. Its totient is φ = 211031020000.

The previous prime is 211031019989. The next prime is 211031020007. The reversal of 211031020001 is 100020130112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168099180001 + 42931840000 = 409999^2 + 207200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211031020001 is a prime.

It is not a weakly prime, because it can be changed into another prime (211031020007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105515510000 + 105515510001.

It is an arithmetic number, because the mean of its divisors is an integer number (105515510001).

Almost surely, 2^211031020001 is an apocalyptic number.

It is an amenable number.

211031020001 is a deficient number, since it is larger than the sum of its proper divisors (1).

211031020001 is an equidigital number, since it uses as much as digits as its factorization.

211031020001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 211031020001 its reverse (100020130112), we get a palindrome (311051150113).

The spelling of 211031020001 in words is "two hundred eleven billion, thirty-one million, twenty thousand, one".