1020202021010 has 8 divisors (see below), whose sum is σ = 1836363637836. Its totient is φ = 408080808400.

The previous prime is 1020202020977. The next prime is 1020202021063. The reversal of 1020202021010 is 101202020201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1010421008809 + 9781012201 = 1005197^2 + 98899^2 .

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 = 1020202020982 and 1020202021000.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 51010101041 + ... + 51010101060.

Almost surely, 2^{1020202021010} is an apocalyptic number.

1020202021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020202021010 is a deficient number, since it is larger than the sum of its proper divisors (816161616826).

1020202021010 is a wasteful number, since it uses less digits than its factorization.

1020202021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102020202108.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1020202021010 its reverse (101202020201), we get a palindrome (1121404041211).

The spelling of 1020202021010 in words is "one trillion, twenty billion, two hundred two million, twenty-one thousand, ten".