211020010212001 has 4 divisors (see below), whose sum is σ = 211685688477972. Its totient is φ = 210354331946032.

The previous prime is 211020010211821. The next prime is 211020010212023. The reversal of 211020010212001 is 100212010020112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51604108960000 + 159415901252001 = 7183600^2 + 12626001^2 .

It is a cyclic number.

It is not a de Polignac number, because 211020010212001 - 2⁴³ = 202223917189793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211020010212061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332839132510 + ... + 332839133143.

It is an arithmetic number, because the mean of its divisors is an integer number (52921422119493).

Almost surely, 2^{211020010212001} is an apocalyptic number.

It is an amenable number.

211020010212001 is a deficient number, since it is larger than the sum of its proper divisors (665678265971).

211020010212001 is an equidigital number, since it uses as much as digits as its factorization.

211020010212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665678265970.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211020010212001 its reverse (100212010020112), we get a palindrome (311232020232113).

The spelling of 211020010212001 in words is "two hundred eleven trillion, twenty billion, ten million, two hundred twelve thousand, one".