100021200010 has 16 divisors (see below), whose sum is σ = 180068941800. Its totient is φ = 40001639616.

The previous prime is 100021199987. The next prime is 100021200031. The reversal of 100021200010 is 10002120001.

It can be written as a sum of positive squares in 4 ways, for example, as 86334305929 + 13686894081 = 293827^2 + 116991^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100021199966 and 100021200002.

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, 793425 + ... + 910804.

Almost surely, 2^100021200010 is an apocalyptic number.

100021200010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100021200010 is a deficient number, since it is larger than the sum of its proper divisors (80047741790).

100021200010 is a wasteful number, since it uses less digits than its factorization.

100021200010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710105.

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

Adding to 100021200010 its reverse (10002120001), we get a palindrome (110023320011).

The spelling of 100021200010 in words is "one hundred billion, twenty-one million, two hundred thousand, ten".