111021020021212 has 48 divisors (see below), whose sum is σ = 225952236195840. Its totient is φ = 46749730248000.

The previous prime is 111021020021209. The next prime is 111021020021281. The reversal of 111021020021212 is 212120020120111.

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, 149468412 + ... + 150209347.

It is an arithmetic number, because the mean of its divisors is an integer number (4707338254080).

Almost surely, 2^{111021020021212} is an apocalyptic number.

It is an amenable number.

111021020021212 is an abundant number, since it is smaller than the sum of its proper divisors (114931216174628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111021020021212 is a wasteful number, since it uses less digits than its factorization.

111021020021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299678002 (or 299678000 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111021020021212 its reverse (212120020120111), we get a palindrome (323141040141323).

The spelling of 111021020021212 in words is "one hundred eleven trillion, twenty-one billion, twenty million, twenty-one thousand, two hundred twelve".