1212110201101 has 4 divisors (see below), whose sum is σ = 1212498576604. Its totient is φ = 1211721825600.

The previous prime is 1212110201087. The next prime is 1212110201111. The reversal of 1212110201101 is 1011020112121.

It is a happy number.

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 250749561001 + 961360640100 = 500749^2 + 980490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212110201101 is a prime.

It is a super-2 number, since 2×1212110201101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212110201111) 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, 194183070 + ... + 194189311.

It is an arithmetic number, because the mean of its divisors is an integer number (303124644151).

Almost surely, 2^{1212110201101} is an apocalyptic number.

It is an amenable number.

1212110201101 is a deficient number, since it is larger than the sum of its proper divisors (388375503).

1212110201101 is an equidigital number, since it uses as much as digits as its factorization.

1212110201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388375502.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1212110201101 its reverse (1011020112121), we get a palindrome (2223130313222).

It can be divided in two parts, 121211020 and 1101, that added together give a palindrome (121212121).

The spelling of 1212110201101 in words is "one trillion, two hundred twelve billion, one hundred ten million, two hundred one thousand, one hundred one".