111220005402 has 48 divisors (see below), whose sum is σ = 262917034848. Its totient is φ = 33698751840.

The previous prime is 111220005389. The next prime is 111220005439. The reversal of 111220005402 is 204500022111.

111220005402 is a `hidden beast` number, since 1 + 1 + 122 + 0 + 0 + 0 + 540 + 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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1753413 + ... + 1815735.

It is an arithmetic number, because the mean of its divisors is an integer number (5477438226).

Almost surely, 2^111220005402 is an apocalyptic number.

111220005402 is an abundant number, since it is smaller than the sum of its proper divisors (151697029446).

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

111220005402 is a wasteful number, since it uses less digits than its factorization.

111220005402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71355 (or 71352 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 111220005402 its reverse (204500022111), we get a palindrome (315720027513).

The spelling of 111220005402 in words is "one hundred eleven billion, two hundred twenty million, five thousand, four hundred two".