20110212111111 has 8 divisors (see below), whose sum is σ = 26816075479680. Its totient is φ = 13405578408312.

The previous prime is 20110212111097. The next prime is 20110212111191. The reversal of 20110212111111 is 11111121201102.

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

It is not a de Polignac number, because 20110212111111 - 2¹¹ = 20110212109063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110212111191) 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, 307378281 + ... + 307443698.

It is an arithmetic number, because the mean of its divisors is an integer number (3352009434960).

Almost surely, 2^{20110212111111} is an apocalyptic number.

20110212111111 is a deficient number, since it is larger than the sum of its proper divisors (6705863368569).

20110212111111 is a wasteful number, since it uses less digits than its factorization.

20110212111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614832885.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 20110212111111 its reverse (11111121201102), we get a palindrome (31221333312213).

The spelling of 20110212111111 in words is "twenty trillion, one hundred ten billion, two hundred twelve million, one hundred eleven thousand, one hundred eleven".