111220022021002 has 16 divisors (see below), whose sum is σ = 172583347588200. Its totient is φ = 53692251820480.

The previous prime is 111220022020963. The next prime is 111220022021039. The reversal of 111220022021002 is 200120220022111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 48804349692121 + 62415672328881 = 6986011^2 + 7900359^2 .

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, 16140252 + ... + 21976072.

Almost surely, 2^{111220022021002} is an apocalyptic number.

111220022021002 is a deficient number, since it is larger than the sum of its proper divisors (61363325567198).

111220022021002 is a wasteful number, since it uses less digits than its factorization.

111220022021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6164441.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 111220022021002 its reverse (200120220022111), we get a palindrome (311340242043113).

The spelling of 111220022021002 in words is "one hundred eleven trillion, two hundred twenty billion, twenty-two million, twenty-one thousand, two".