2100121121212 has 24 divisors (see below), whose sum is σ = 3687979309056. Its totient is φ = 1046417468208.

The previous prime is 2100121121201. The next prime is 2100121121227. The reversal of 2100121121212 is 2121211210012.

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, 1192363 + ... + 2371069.

It is an arithmetic number, because the mean of its divisors is an integer number (153665804544).

Almost surely, 2^{2100121121212} is an apocalyptic number.

It is an amenable number.

2100121121212 is a deficient number, since it is larger than the sum of its proper divisors (1587858187844).

2100121121212 is a wasteful number, since it uses less digits than its factorization.

2100121121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180257 (or 1180255 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2100121121212 its reverse (2121211210012), we get a palindrome (4221332331224).

The spelling of 2100121121212 in words is "two trillion, one hundred billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred twelve".