111220021002 has 16 divisors (see below), whose sum is σ = 230110388640. Its totient is φ = 35794949232.

The previous prime is 111220020943. The next prime is 111220021021. The reversal of 111220021002 is 200120022111.

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, 319597588 + ... + 319597935.

It is an arithmetic number, because the mean of its divisors is an integer number (14381899290).

Almost surely, 2^111220021002 is an apocalyptic number.

111220021002 is an abundant number, since it is smaller than the sum of its proper divisors (118890367638).

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

111220021002 is a wasteful number, since it uses less digits than its factorization.

111220021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639195557.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 111220021002 its reverse (200120022111), we get a palindrome (311340043113).

The spelling of 111220021002 in words is "one hundred eleven billion, two hundred twenty million, twenty-one thousand, two".