1212111020101 has 8 divisors (see below), whose sum is σ = 1225327163744. Its totient is φ = 1198965363120.

The previous prime is 1212111020053. The next prime is 1212111020111. The reversal of 1212111020101 is 1010201112121.

It is a happy number.

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 1212111020101 - 2¹⁵ = 1212110987333 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 (1212111020111) 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, 17587086 + ... + 17655871.

It is an arithmetic number, because the mean of its divisors is an integer number (153165895468).

Almost surely, 2^{1212111020101} is an apocalyptic number.

It is an amenable number.

1212111020101 is a deficient number, since it is larger than the sum of its proper divisors (13216143643).

1212111020101 is a wasteful number, since it uses less digits than its factorization.

1212111020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35243331.

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

Adding to 1212111020101 its reverse (1010201112121), we get a palindrome (2222312132222).

The spelling of 1212111020101 in words is "one trillion, two hundred twelve billion, one hundred eleven million, twenty thousand, one hundred one".