1220102010 has 48 divisors (see below), whose sum is σ = 3258011016. Its totient is φ = 316566144.

The previous prime is 1220102003. The next prime is 1220102011. The reversal of 1220102010 is 102010221.

It can be written as a sum of positive squares in 4 ways, for example, as 971755929 + 248346081 = 31173^2 + 15759^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1220101983 and 1220102001.

It is not an unprimeable number, because it can be changed into a prime (1220102011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179869 + ... + 186528.

Almost surely, 2^1220102010 is an apocalyptic number.

1220102010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220102010 is an abundant number, since it is smaller than the sum of its proper divisors (2037909006).

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

1220102010 is a wasteful number, since it uses less digits than its factorization.

1220102010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366447 (or 366444 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1220102010 is about 34929.9586315243. The cubic root of 1220102010 is about 1068.5595109357.

Adding to 1220102010 its reverse (102010221), we get a palindrome (1322112231).

The spelling of 1220102010 in words is "one billion, two hundred twenty million, one hundred two thousand, ten".