1001020201210 has 16 divisors (see below), whose sum is σ = 1801914481800. Its totient is φ = 400390720576.

The previous prime is 1001020201177. The next prime is 1001020201211. The reversal of 1001020201210 is 121020201001.

It can be written as a sum of positive squares in 4 ways, for example, as 857129710969 + 143890490241 = 925813^2 + 379329^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1001020201211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1926505 + ... + 2390284.

Almost surely, 2^{1001020201210} is an apocalyptic number.

1001020201210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001020201210 is a deficient number, since it is larger than the sum of its proper divisors (800894280590).

1001020201210 is a wasteful number, since it uses less digits than its factorization.

1001020201210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4339985.

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

Adding to 1001020201210 its reverse (121020201001), we get a palindrome (1122040402211).

The spelling of 1001020201210 in words is "one trillion, one billion, twenty million, two hundred one thousand, two hundred ten".