102020121010 has 8 divisors (see below), whose sum is σ = 183636217836. Its totient is φ = 40808048400.

The previous prime is 102020120999. The next prime is 102020121059. The reversal of 102020121010 is 10121020201.

It can be written as a sum of positive squares in 2 ways, for example, as 101810131929 + 209989081 = 319077^2 + 14491^2 .

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: 10202012101 = 102020121010 / (1 + 0 + 2 + 0 + 2 + 0 + 1 + 2 + 1 + 0 + 1 + 0).

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, 5101006041 + ... + 5101006060.

Almost surely, 2^102020121010 is an apocalyptic number.

102020121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102020121010 is a deficient number, since it is larger than the sum of its proper divisors (81616096826).

102020121010 is a wasteful number, since it uses less digits than its factorization.

102020121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10202012108.

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

Adding to 102020121010 its reverse (10121020201), we get a palindrome (112141141211).

The spelling of 102020121010 in words is "one hundred two billion, twenty million, one hundred twenty-one thousand, ten".