1012021210 has 16 divisors (see below), whose sum is σ = 1822048416. Its totient is φ = 404717328.

The previous prime is 1012021201. The next prime is 1012021259. The reversal of 1012021210 is 121202101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52057 + ... + 68803.

It is an arithmetic number, because the mean of its divisors is an integer number (113878026).

Almost surely, 2^1012021210 is an apocalyptic number.

1012021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1012021210 is a deficient number, since it is larger than the sum of its proper divisors (810027206).

1012021210 is a wasteful number, since it uses less digits than its factorization.

1012021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22797.

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

The square root of 1012021210 is about 31812.2808047458. The cubic root of 1012021210 is about 1003.9911197714.

Adding to 1012021210 its reverse (121202101), we get a palindrome (1133223311).

The spelling of 1012021210 in words is "one billion, twelve million, twenty-one thousand, two hundred ten".