1212112010101 has 4 divisors (see below), whose sum is σ = 1212242032512. Its totient is φ = 1211981987692.

The previous prime is 1212112010099. The next prime is 1212112010147. The reversal of 1212112010101 is 1010102112121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1212112010101 - 2¹ = 1212112010099 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 (1212112010801) 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, 64997221 + ... + 65015866.

It is an arithmetic number, because the mean of its divisors is an integer number (303060508128).

Almost surely, 2^{1212112010101} is an apocalyptic number.

It is an amenable number.

1212112010101 is a deficient number, since it is larger than the sum of its proper divisors (130022411).

1212112010101 is an equidigital number, since it uses as much as digits as its factorization.

1212112010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130022410.

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

Adding to 1212112010101 its reverse (1010102112121), we get a palindrome (2222214122222).

It can be divided in two parts, 121211 and 2010101, that added together give a palindrome (2131312).

The spelling of 1212112010101 in words is "one trillion, two hundred twelve billion, one hundred twelve million, ten thousand, one hundred one".