201212021112101 has 8 divisors (see below), whose sum is σ = 201256897219224. Its totient is φ = 201167149881600.

The previous prime is 201212021112073. The next prime is 201212021112121. The reversal of 201212021112101 is 101211120212102.

It can be written as a sum of positive squares in 4 ways, for example, as 20001923467201 + 181210097644900 = 4472351^2 + 13461430^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 201212021112101 - 2¹⁰ = 201212021111077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201212021112101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201212021112121) 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, 81942401 + ... + 84362201.

It is an arithmetic number, because the mean of its divisors is an integer number (25157112152403).

Almost surely, 2^{201212021112101} is an apocalyptic number.

It is an amenable number.

201212021112101 is a deficient number, since it is larger than the sum of its proper divisors (44876107123).

201212021112101 is a wasteful number, since it uses less digits than its factorization.

201212021112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438311.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201212021112101 its reverse (101211120212102), we get a palindrome (302423141324203).

The spelling of 201212021112101 in words is "two hundred one trillion, two hundred twelve billion, twenty-one million, one hundred twelve thousand, one hundred one".