6999021101 has 4 divisors (see below), whose sum is σ = 7021526304. Its totient is φ = 6976515900.

The previous prime is 6999021077. The next prime is 6999021103. The reversal of 6999021101 is 1011209996.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6999021101 - 2¹⁴ = 6999004717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6999021103) 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, 11252135 + ... + 11252756.

It is an arithmetic number, because the mean of its divisors is an integer number (1755381576).

Almost surely, 2^6999021101 is an apocalyptic number.

It is an amenable number.

6999021101 is a deficient number, since it is larger than the sum of its proper divisors (22505203).

6999021101 is a wasteful number, since it uses less digits than its factorization.

6999021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22505202.

The product of its (nonzero) digits is 8748, while the sum is 38.

The square root of 6999021101 is about 83660.1524084196. The cubic root of 6999021101 is about 1912.8420087859.

The spelling of 6999021101 in words is "six billion, nine hundred ninety-nine million, twenty-one thousand, one hundred one".