2121204021212 has 12 divisors (see below), whose sum is σ = 3748860572856. Its totient is φ = 1050101000400.

The previous prime is 2121204021203. The next prime is 2121204021241.

It is a happy number.

2121204021212 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2625252098 + ... + 2625252905.

It is an arithmetic number, because the mean of its divisors is an integer number (312405047738).

Almost surely, 2^{2121204021212} is an apocalyptic number.

It is an amenable number.

2121204021212 is a deficient number, since it is larger than the sum of its proper divisors (1627656551644).

2121204021212 is a wasteful number, since it uses less digits than its factorization.

2121204021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5250505108 (or 5250505106 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The spelling of 2121204021212 in words is "two trillion, one hundred twenty-one billion, two hundred four million, twenty-one thousand, two hundred twelve".