1220022105 has 32 divisors (see below), whose sum is σ = 1997498880. Its totient is φ = 635631360.

The previous prime is 1220022103. The next prime is 1220022107. The reversal of 1220022105 is 5012200221.

It is an interprime number because it is at equal distance from previous prime (1220022103) and next prime (1220022107).

It is not a de Polignac number, because 1220022105 - 2¹ = 1220022103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1220022103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186795 + ... + 193215.

It is an arithmetic number, because the mean of its divisors is an integer number (62421840).

Almost surely, 2^1220022105 is an apocalyptic number.

1220022105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220022105 is a deficient number, since it is larger than the sum of its proper divisors (777476775).

1220022105 is a wasteful number, since it uses less digits than its factorization.

1220022105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6721.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1220022105 is about 34928.8148238671. The cubic root of 1220022105 is about 1068.5361836207.

Adding to 1220022105 its reverse (5012200221), we get a palindrome (6232222326).

The spelling of 1220022105 in words is "one billion, two hundred twenty million, twenty-two thousand, one hundred five".