1210220010 has 108 divisors (see below), whose sum is σ = 3338193222. Its totient is φ = 304155648.

The previous prime is 1210219973. The next prime is 1210220017. The reversal of 1210220010 is 100220121.

It can be written as a sum of positive squares in 3 ways, for example, as 666724041 + 543495969 = 25821^2 + 23313^2 .

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 = 1210219974 and 1210220001.

It is not an unprimeable number, because it can be changed into a prime (1210220017) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 6270474 + ... + 6270666.

Almost surely, 2^1210220010 is an apocalyptic number.

1210220010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1210220010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1669096611).

1210220010 is an abundant number, since it is smaller than the sum of its proper divisors (2127973212).

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

1210220010 is a wasteful number, since it uses less digits than its factorization.

1210220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 222 counting only the distinct ones).

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

The square root of 1210220010 is about 34788.2165395123. The cubic root of 1210220010 is about 1065.6668177419. Note that the first 3 decimals are identical.

Adding to 1210220010 its reverse (100220121), we get a palindrome (1310440131).

The spelling of 1210220010 in words is "one billion, two hundred ten million, two hundred twenty thousand, ten".