100102021210 has 8 divisors (see below), whose sum is σ = 180183638196. Its totient is φ = 40040808480.

The previous prime is 100102021171. The next prime is 100102021211. The reversal of 100102021210 is 12120201001.

It can be written as a sum of positive squares in 2 ways, for example, as 99986866849 + 115154361 = 316207^2 + 10731^2 .

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: 10010202121 = 100102021210 / (1 + 0 + 0 + 1 + 0 + 2 + 0 + 2 + 1 + 2 + 1 + 0).

It is not an unprimeable number, because it can be changed into a prime (100102021211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5005101051 + ... + 5005101070.

Almost surely, 2^100102021210 is an apocalyptic number.

100102021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100102021210 is a deficient number, since it is larger than the sum of its proper divisors (80081616986).

100102021210 is a wasteful number, since it uses less digits than its factorization.

100102021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010202128.

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

Adding to 100102021210 its reverse (12120201001), we get a palindrome (112222222211).

The spelling of 100102021210 in words is "one hundred billion, one hundred two million, twenty-one thousand, two hundred ten".