111020212101 has 16 divisors (see below), whose sum is σ = 152680192704. Its totient is φ = 71704024704.

The previous prime is 111020212081. The next prime is 111020212103. The reversal of 111020212101 is 101212020111.

It is not a de Polignac number, because 111020212101 - 2¹³ = 111020203909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020212103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2120451 + ... + 2172176.

It is an arithmetic number, because the mean of its divisors is an integer number (9542512044).

Almost surely, 2^111020212101 is an apocalyptic number.

It is an amenable number.

111020212101 is a deficient number, since it is larger than the sum of its proper divisors (41659980603).

111020212101 is a wasteful number, since it uses less digits than its factorization.

111020212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292900.

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

Adding to 111020212101 its reverse (101212020111), we get a palindrome (212232232212).

The spelling of 111020212101 in words is "one hundred eleven billion, twenty million, two hundred twelve thousand, one hundred one".