1021100213 has 8 divisors (see below), whose sum is σ = 1170702528. Its totient is φ = 872430624.

The previous prime is 1021100209. The next prime is 1021100263. The reversal of 1021100213 is 3120011201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021100213 - 2² = 1021100209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021100194 and 1021100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021100263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230831 + ... + 235212.

It is an arithmetic number, because the mean of its divisors is an integer number (146337816).

Almost surely, 2^1021100213 is an apocalyptic number.

It is an amenable number.

1021100213 is a deficient number, since it is larger than the sum of its proper divisors (149602315).

1021100213 is an equidigital number, since it uses as much as digits as its factorization.

1021100213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466363.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1021100213 is about 31954.6587057349. The cubic root of 1021100213 is about 1006.9845074136.

Adding to 1021100213 its reverse (3120011201), we get a palindrome (4141111414).

The spelling of 1021100213 in words is "one billion, twenty-one million, one hundred thousand, two hundred thirteen".