1011221210 has 8 divisors (see below), whose sum is σ = 1820198196. Its totient is φ = 404488480.

The previous prime is 1011221207. The next prime is 1011221221. The reversal of 1011221210 is 121221101.

It can be written as a sum of positive squares in 2 ways, for example, as 995213209 + 16008001 = 31547^2 + 4001^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1011221191 and 1011221200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50561051 + ... + 50561070.

Almost surely, 2^1011221210 is an apocalyptic number.

1011221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011221210 is a deficient number, since it is larger than the sum of its proper divisors (808976986).

1011221210 is a wasteful number, since it uses less digits than its factorization.

1011221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101122128.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1011221210 is about 31799.7045583760. The cubic root of 1011221210 is about 1003.7264992867.

Adding to 1011221210 its reverse (121221101), we get a palindrome (1132442311).

The spelling of 1011221210 in words is "one billion, eleven million, two hundred twenty-one thousand, two hundred ten".