211020001 has 2 divisors, whose sum is σ = 211020002. Its totient is φ = 211020000.

The previous prime is 211019993. The next prime is 211020053. The reversal of 211020001 is 100020112.

211020001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160680976 + 50339025 = 12676^2 + 7095^2 .

It is a cyclic number.

It is not a de Polignac number, because 211020001 - 2³ = 211019993 is a prime.

It is not a weakly prime, because it can be changed into another prime (211020091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510000 + 105510001.

It is an arithmetic number, because the mean of its divisors is an integer number (105510001).

Almost surely, 2^211020001 is an apocalyptic number.

It is an amenable number.

211020001 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020001 is an equidigital number, since it uses as much as digits as its factorization.

211020001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 211020001 is about 14526.5274928319. The cubic root of 211020001 is about 595.3529915868.

Adding to 211020001 its reverse (100020112), we get a palindrome (311040113).

The spelling of 211020001 in words is "two hundred eleven million, twenty thousand, one".