1220022102 has 64 divisors (see below), whose sum is σ = 2788551360. Its totient is φ = 352518144.

The previous prime is 1220022077. The next prime is 1220022103. The reversal of 1220022102 is 2012200221.

It is a congruent number.

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, 865174 + ... + 866582.

It is an arithmetic number, because the mean of its divisors is an integer number (43571115).

Almost surely, 2^1220022102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220022102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1394275680).

1220022102 is an abundant number, since it is smaller than the sum of its proper divisors (1568529258).

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

1220022102 is a wasteful number, since it uses less digits than its factorization.

1220022102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1220022102 is about 34928.8147809226. The cubic root of 1220022102 is about 1068.5361827449.

Adding to 1220022102 its reverse (2012200221), we get a palindrome (3232222323).

The spelling of 1220022102 in words is "one billion, two hundred twenty million, twenty-two thousand, one hundred two".