1021020201010 has 16 divisors (see below), whose sum is σ = 1858486210200. Its totient is φ = 403819225216.

The previous prime is 1021020200999. The next prime is 1021020201041. The reversal of 1021020201010 is 101020201201.

It can be written as a sum of positive squares in 4 ways, for example, as 948884447449 + 72135753561 = 974107^2 + 268581^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573605965 + ... + 573607744.

Almost surely, 2^{1021020201010} is an apocalyptic number.

1021020201010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021020201010 is a deficient number, since it is larger than the sum of its proper divisors (837466009190).

1021020201010 is a wasteful number, since it uses less digits than its factorization.

1021020201010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147213805.

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

Adding to 1021020201010 its reverse (101020201201), we get a palindrome (1122040402211).

The spelling of 1021020201010 in words is "one trillion, twenty-one billion, twenty million, two hundred one thousand, ten".