202001021010 has 24 divisors (see below), whose sum is σ = 525202654860. Its totient is φ = 53866938912.

The previous prime is 202001020979. The next prime is 202001021063. The reversal of 202001021010 is 10120100202.

It can be written as a sum of positive squares in 2 ways, for example, as 199597178169 + 2403842841 = 446763^2 + 49029^2 .

It is a super-2 number, since 2×202001021010² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 202001020983 and 202001021001.

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 11 ways as a sum of consecutive naturals, for example, 1122227805 + ... + 1122227984.

Almost surely, 2^202001021010 is an apocalyptic number.

202001021010 is an abundant number, since it is smaller than the sum of its proper divisors (323201633850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202001021010 is a wasteful number, since it uses less digits than its factorization.

202001021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244455802 (or 2244455799 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 202001021010 its reverse (10120100202), we get a palindrome (212121121212).

The spelling of 202001021010 in words is "two hundred two billion, one million, twenty-one thousand, ten".