111212020011 has 32 divisors (see below), whose sum is σ = 150761917440. Its totient is φ = 72913823136.

The previous prime is 111212019983. The next prime is 111212020033. The reversal of 111212020011 is 110020212111.

It is not a de Polignac number, because 111212020011 - 2¹³ = 111212011819 is a prime.

It is a super-2 number, since 2×111212020011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111212020081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27614580 + ... + 27618606.

It is an arithmetic number, because the mean of its divisors is an integer number (4711309920).

Almost surely, 2^111212020011 is an apocalyptic number.

111212020011 is a deficient number, since it is larger than the sum of its proper divisors (39549897429).

111212020011 is a wasteful number, since it uses less digits than its factorization.

111212020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4743.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111212020011 its reverse (110020212111), we get a palindrome (221232232122).

The spelling of 111212020011 in words is "one hundred eleven billion, two hundred twelve million, twenty thousand, eleven".