111212121202002 has 48 divisors (see below), whose sum is σ = 249885920793600. Its totient is φ = 37070425885392.

The previous prime is 111212121201997. The next prime is 111212121202019. The reversal of 111212121202002 is 200202121212111.

111212121202002 is a `hidden beast` number, since 11 + 121 + 212 + 120 + 200 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69063124 + ... + 70655072.

It is an arithmetic number, because the mean of its divisors is an integer number (5205956683200).

Almost surely, 2^{111212121202002} is an apocalyptic number.

111212121202002 is an abundant number, since it is smaller than the sum of its proper divisors (138673799591598).

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

111212121202002 is a wasteful number, since it uses less digits than its factorization.

111212121202002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735709 (or 1735697 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111212121202002 its reverse (200202121212111), we get a palindrome (311414242414113).

The spelling of 111212121202002 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred twenty-one million, two hundred two thousand, two".