2120212211111 has 8 divisors (see below), whose sum is σ = 2127946142784. Its totient is φ = 2112488040960.

The previous prime is 2120212211107. The next prime is 2120212211113. The reversal of 2120212211111 is 1111122120212.

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 2120212211111 - 2² = 2120212211107 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 2120212211111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120212211113) 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, 2005046 + ... + 2874131.

It is an arithmetic number, because the mean of its divisors is an integer number (265993267848).

Almost surely, 2^{2120212211111} is an apocalyptic number.

2120212211111 is a deficient number, since it is larger than the sum of its proper divisors (7733931673).

2120212211111 is a wasteful number, since it uses less digits than its factorization.

2120212211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4880761.

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

Adding to 2120212211111 its reverse (1111122120212), we get a palindrome (3231334331323).

The spelling of 2120212211111 in words is "two trillion, one hundred twenty billion, two hundred twelve million, two hundred eleven thousand, one hundred eleven".