100021020010 has 32 divisors (see below), whose sum is σ = 187894293840. Its totient is φ = 38286947328.

The previous prime is 100021019963. The next prime is 100021020013. The reversal of 100021020010 is 10020120001.

It can be written as a sum of positive squares in 8 ways, for example, as 13956823321 + 86064196689 = 118139^2 + 293367^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100021019975 and 100021020002.

It is not an unprimeable number, because it can be changed into a prime (100021020013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1493337 + ... + 1558876.

Almost surely, 2^100021020010 is an apocalyptic number.

100021020010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100021020010 is a deficient number, since it is larger than the sum of its proper divisors (87873273830).

100021020010 is a wasteful number, since it uses less digits than its factorization.

100021020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052362.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 100021020010 its reverse (10020120001), we get a palindrome (110041140011).

Subtracting from 100021020010 its reverse (10020120001), we obtain a palindrome (90000900009).

The spelling of 100021020010 in words is "one hundred billion, twenty-one million, twenty thousand, ten".