111111212222002 has 16 divisors (see below), whose sum is σ = 167906565371160. Its totient is φ = 55142469180288.

The previous prime is 111111212221979. The next prime is 111111212222011. The reversal of 111111212222002 is 200222212111111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 75773525630401 + 35337686591601 = 8704799^2 + 5944551^2 .

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, 26033877 + ... + 29999752.

Almost surely, 2^{111111212222002} is an apocalyptic number.

111111212222002 is a deficient number, since it is larger than the sum of its proper divisors (56795353149158).

111111212222002 is a wasteful number, since it uses less digits than its factorization.

111111212222002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56041005.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111111212222002 its reverse (200222212111111), we get a palindrome (311333424333113).

The spelling of 111111212222002 in words is "one hundred eleven trillion, one hundred eleven billion, two hundred twelve million, two hundred twenty-two thousand, two".