1201021210 has 8 divisors (see below), whose sum is σ = 2161838196. Its totient is φ = 480408480.

The previous prime is 1201021201. The next prime is 1201021249. The reversal of 1201021210 is 121201021.

It can be written as a sum of positive squares in 2 ways, for example, as 1131582321 + 69438889 = 33639^2 + 8333^2 .

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: 120102121 = 1201021210 / (1 + 2 + 0 + 1 + 0 + 2 + 1 + 2 + 1 + 0).

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, 60051051 + ... + 60051070.

Almost surely, 2^1201021210 is an apocalyptic number.

1201021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201021210 is a deficient number, since it is larger than the sum of its proper divisors (960816986).

1201021210 is a wasteful number, since it uses less digits than its factorization.

1201021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120102128.

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

The square root of 1201021210 is about 34655.7529134774. The cubic root of 1201021210 is about 1062.9599274786.

Adding to 1201021210 its reverse (121201021), we get a palindrome (1322222231).

The spelling of 1201021210 in words is "one billion, two hundred one million, twenty-one thousand, two hundred ten".