2120212111121 has 8 divisors (see below), whose sum is σ = 2291373571200. Its totient is φ = 1950203254032.

The previous prime is 2120212111103. The next prime is 2120212111123. The reversal of 2120212111121 is 1211112120212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2120212111121 - 2⁶ = 2120212111057 is a prime.

It is a super-2 number, since 2×2120212111121² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2120212111121.

It is not an unprimeable number, because it can be changed into a prime (2120212111123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288146921 + ... + 288154278.

It is an arithmetic number, because the mean of its divisors is an integer number (286421696400).

Almost surely, 2^{2120212111121} is an apocalyptic number.

It is an amenable number.

2120212111121 is a deficient number, since it is larger than the sum of its proper divisors (171161460079).

2120212111121 is a wasteful number, since it uses less digits than its factorization.

2120212111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576301495.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2120212111121 its reverse (1211112120212), we get a palindrome (3331324231333).

Subtracting from 2120212111121 its reverse (1211112120212), we obtain a palindrome (909099990909).

The spelling of 2120212111121 in words is "two trillion, one hundred twenty billion, two hundred twelve million, one hundred eleven thousand, one hundred twenty-one".