2120212220111 has 4 divisors (see below), whose sum is σ = 2120270042424. Its totient is φ = 2120154397800.

The previous prime is 2120212220101. The next prime is 2120212220117. The reversal of 2120212220111 is 1110222120212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2120212220111 - 2¹⁴ = 2120212203727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120212220111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120212220117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28856120 + ... + 28929501.

It is an arithmetic number, because the mean of its divisors is an integer number (530067510606).

Almost surely, 2^{2120212220111} is an apocalyptic number.

2120212220111 is a deficient number, since it is larger than the sum of its proper divisors (57822313).

2120212220111 is an equidigital number, since it uses as much as digits as its factorization.

2120212220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57822312.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2120212220111 its reverse (1110222120212), we get a palindrome (3230434340323).

The spelling of 2120212220111 in words is "two trillion, one hundred twenty billion, two hundred twelve million, two hundred twenty thousand, one hundred eleven".