201212111100101 has 8 divisors (see below), whose sum is σ = 205340832779544. Its totient is φ = 197095695596800.

The previous prime is 201212111099963. The next prime is 201212111100109. The reversal of 201212111100101 is 101001111212102.

It can be written as a sum of positive squares in 4 ways, for example, as 36753287877601 + 164458823222500 = 6062449^2 + 12824150^2 .

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 201212111100101 - 2¹⁸ = 201212110837957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201212111100109) 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, 3076511000 + ... + 3076576401.

It is an arithmetic number, because the mean of its divisors is an integer number (25667604097443).

Almost surely, 2^{201212111100101} is an apocalyptic number.

It is an amenable number.

201212111100101 is a deficient number, since it is larger than the sum of its proper divisors (4128721679443).

201212111100101 is an equidigital number, since it uses as much as digits as its factorization.

201212111100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6153088071.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 201212111100101 its reverse (101001111212102), we get a palindrome (302213222312203).

The spelling of 201212111100101 in words is "two hundred one trillion, two hundred twelve billion, one hundred eleven million, one hundred thousand, one hundred one".