2012121021111 has 8 divisors (see below), whose sum is σ = 2799472725120. Its totient is φ = 1283091665592.

The previous prime is 2012121021101. The next prime is 2012121021133. The reversal of 2012121021111 is 1111201212102.

It is a happy number.

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

It is not a de Polignac number, because 2012121021111 - 2¹⁹ = 2012120496823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012121021101) 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, 14580587041 + ... + 14580587178.

It is an arithmetic number, because the mean of its divisors is an integer number (349934090640).

Almost surely, 2^{2012121021111} is an apocalyptic number.

2012121021111 is a deficient number, since it is larger than the sum of its proper divisors (787351704009).

2012121021111 is a wasteful number, since it uses less digits than its factorization.

2012121021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29161174245.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2012121021111 its reverse (1111201212102), we get a palindrome (3123322233213).

It can be divided in two parts, 201212102 and 1111, that multiplied together give a palindrome (223546645322).

The spelling of 2012121021111 in words is "two trillion, twelve billion, one hundred twenty-one million, twenty-one thousand, one hundred eleven".