2121105011212 has 24 divisors (see below), whose sum is σ = 4049648124480. Its totient is φ = 964075348560.

The previous prime is 2121105011203. The next prime is 2121105011227.

2121105011212 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 2121105011212.

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, 901162 + ... + 2248177.

It is an arithmetic number, because the mean of its divisors is an integer number (168735338520).

Almost surely, 2^{2121105011212} is an apocalyptic number.

2121105011212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2121105011212 is a deficient number, since it is larger than the sum of its proper divisors (1928543113268).

2121105011212 is a wasteful number, since it uses less digits than its factorization.

2121105011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164661 (or 3164659 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 19.

The spelling of 2121105011212 in words is "two trillion, one hundred twenty-one billion, one hundred five million, eleven thousand, two hundred twelve".