10021279 has 8 divisors (see below), whose sum is σ = 10858320. Its totient is φ = 9211776.

The previous prime is 10021267. The next prime is 10021283. The reversal of 10021279 is 97212001.

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 10021279 - 2⁵ = 10021247 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 (10021259) 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, 6124 + ... + 7585.

It is an arithmetic number, because the mean of its divisors is an integer number (1357290).

Almost surely, 2^10021279 is an apocalyptic number.

10021279 is a deficient number, since it is larger than the sum of its proper divisors (837041).

10021279 is a wasteful number, since it uses less digits than its factorization.

10021279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13769.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 10021279 is about 3165.6403775540. The cubic root of 10021279 is about 215.5961747927.

The spelling of 10021279 in words is "ten million, twenty-one thousand, two hundred seventy-nine".