100021111210 has 8 divisors (see below), whose sum is σ = 180038000196. Its totient is φ = 40008444480.

The previous prime is 100021111193. The next prime is 100021111231. The reversal of 100021111210 is 12111120001.

It can be written as a sum of positive squares in 2 ways, for example, as 100018490049 + 2621161 = 316257^2 + 1619^2 .

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: 10002111121 = 100021111210 / (1 + 0 + 0 + 0 + 2 + 1 + 1 + 1 + 1 + 2 + 1 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5001055551 + ... + 5001055570.

Almost surely, 2^100021111210 is an apocalyptic number.

100021111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100021111210 is a deficient number, since it is larger than the sum of its proper divisors (80016888986).

100021111210 is a wasteful number, since it uses less digits than its factorization.

100021111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10002111128.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 100021111210 its reverse (12111120001), we get a palindrome (112132231211).

The spelling of 100021111210 in words is "one hundred billion, twenty-one million, one hundred eleven thousand, two hundred ten".