2121120211212 has 72 divisors (see below), whose sum is σ = 5515530056400. Its totient is φ = 686819253888.

The previous prime is 2121120211183. The next prime is 2121120211229.

2121120211212 is a `hidden beast` number, since 2 + 121 + 120 + 211 + 212 = 666.

2121120211212 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 461787 + ... + 2110802.

Almost surely, 2^{2121120211212} is an apocalyptic number.

It is an amenable number.

2121120211212 is an abundant number, since it is smaller than the sum of its proper divisors (3394409845188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121120211212 is a wasteful number, since it uses less digits than its factorization.

2121120211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573255 (or 2573250 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

It can be divided in two parts, 2121120 and 211212, that added together give a palindrome (2332332).

The spelling of 2121120211212 in words is "two trillion, one hundred twenty-one billion, one hundred twenty million, two hundred eleven thousand, two hundred twelve".