111222100020212 has 24 divisors (see below), whose sum is σ = 194707817459400. Its totient is φ = 55591296178176.

The previous prime is 111222100020203. The next prime is 111222100020281. The reversal of 111222100020212 is 212020001222111.

It can be written as a sum of positive squares in 4 ways, for example, as 52804144089316 + 58417955930896 = 7266646^2 + 7643164^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450042614 + ... + 450289682.

It is an arithmetic number, because the mean of its divisors is an integer number (8112825727475).

Almost surely, 2^{111222100020212} is an apocalyptic number.

It is an amenable number.

111222100020212 is a deficient number, since it is larger than the sum of its proper divisors (83485717439188).

111222100020212 is a wasteful number, since it uses less digits than its factorization.

111222100020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286595 (or 286593 counting only the distinct ones).

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

Adding to 111222100020212 its reverse (212020001222111), we get a palindrome (323242101242323).

The spelling of 111222100020212 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred million, twenty thousand, two hundred twelve".