2121020133212 has 6 divisors (see below), whose sum is σ = 3711785233128. Its totient is φ = 1060510066604.

The previous prime is 2121020133209. The next prime is 2121020133259. The reversal of 2121020133212 is 2123310201212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265127516648 + ... + 265127516655.

It is an arithmetic number, because the mean of its divisors is an integer number (618630872188).

Almost surely, 2^{2121020133212} is an apocalyptic number.

It is an amenable number.

2121020133212 is a deficient number, since it is larger than the sum of its proper divisors (1590765099916).

2121020133212 is a wasteful number, since it uses less digits than its factorization.

2121020133212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530255033307 (or 530255033305 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2121020133212 its reverse (2123310201212), we get a palindrome (4244330334424).

The spelling of 2121020133212 in words is "two trillion, one hundred twenty-one billion, twenty million, one hundred thirty-three thousand, two hundred twelve".