1220211010 has 8 divisors (see below), whose sum is σ = 2196379836. Its totient is φ = 488084400.

The previous prime is 1220211007. The next prime is 1220211017. The reversal of 1220211010 is 101120221.

It can be written as a sum of positive squares in 2 ways, for example, as 1042708681 + 177502329 = 32291^2 + 13323^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 122021101 = 1220211010 / (1 + 2 + 2 + 0 + 2 + 1 + 1 + 0 + 1 + 0).

It is not an unprimeable number, because it can be changed into a prime (1220211017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61010541 + ... + 61010560.

Almost surely, 2^1220211010 is an apocalyptic number.

1220211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220211010 is a deficient number, since it is larger than the sum of its proper divisors (976168826).

1220211010 is a wasteful number, since it uses less digits than its factorization.

1220211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122021108.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1220211010 is about 34931.5188619104. The cubic root of 1220211010 is about 1068.5913305479.

Adding to 1220211010 its reverse (101120221), we get a palindrome (1321331231).

The spelling of 1220211010 in words is "one billion, two hundred twenty million, two hundred eleven thousand, ten".