201012012011021 has 8 divisors (see below), whose sum is σ = 201598492684344. Its totient is φ = 200426324417280.

The previous prime is 201012012011011. The next prime is 201012012011053. The reversal of 201012012011021 is 120110210210102.

It can be written as a sum of positive squares in 4 ways, for example, as 8033766672100 + 192978245338921 = 2834390^2 + 13891661^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201012012011021 is a prime.

It is a super-3 number, since 3×201012012011021³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201012012010987 and 201012012011005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201012012011011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197762240 + ... + 198776073.

It is an arithmetic number, because the mean of its divisors is an integer number (25199811585543).

Almost surely, 2^{201012012011021} is an apocalyptic number.

It is an amenable number.

201012012011021 is a deficient number, since it is larger than the sum of its proper divisors (586480673323).

201012012011021 is an equidigital number, since it uses as much as digits as its factorization.

201012012011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396539791.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201012012011021 its reverse (120110210210102), we get a palindrome (321122222221123).

The spelling of 201012012011021 in words is "two hundred one trillion, twelve billion, twelve million, eleven thousand, twenty-one".