12101020021012 has 24 divisors (see below), whose sum is σ = 22900398269672. Its totient is φ = 5561911526400.

The previous prime is 12101020021007. The next prime is 12101020021061. The reversal of 12101020021012 is 21012002010121.

It can be written as a sum of positive squares in 4 ways, for example, as 61327550736 + 12039692470276 = 247644^2 + 3469826^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 12101020020983 and 12101020021001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482792289 + ... + 482817352.

Almost surely, 2^{12101020021012} is an apocalyptic number.

It is an amenable number.

12101020021012 is a deficient number, since it is larger than the sum of its proper divisors (10799378248660).

12101020021012 is a wasteful number, since it uses less digits than its factorization.

12101020021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965609899 (or 965609897 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12101020021012 its reverse (21012002010121), we get a palindrome (33113022031133).

The spelling of 12101020021012 in words is "twelve trillion, one hundred one billion, twenty million, twenty-one thousand, twelve".