111022021020212 has 48 divisors (see below), whose sum is σ = 208416660091920. Its totient is φ = 51564507389952.

The previous prime is 111022021020191. The next prime is 111022021020247. The reversal of 111022021020212 is 212020120220111.

It can be written as a sum of positive squares in 8 ways, for example, as 48069761431696 + 62952259588516 = 6933236^2 + 7934246^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32831537 + ... + 36054872.

It is an arithmetic number, because the mean of its divisors is an integer number (4342013751915).

Almost surely, 2^{111022021020212} is an apocalyptic number.

It is an amenable number.

111022021020212 is a deficient number, since it is larger than the sum of its proper divisors (97394639071708).

111022021020212 is a wasteful number, since it uses less digits than its factorization.

111022021020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68886740 (or 68886738 counting only the distinct ones).

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

Adding to 111022021020212 its reverse (212020120220111), we get a palindrome (323042141240323).

The spelling of 111022021020212 in words is "one hundred eleven trillion, twenty-two billion, twenty-one million, twenty thousand, two hundred twelve".