10021211993 has 8 divisors (see below), whose sum is σ = 11140206336. Its totient is φ = 8951950800.

The previous prime is 10021211989. The next prime is 10021212011. The reversal of 10021211993 is 39911212001.

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

It is not a de Polignac number, because 10021211993 - 2² = 10021211989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10021211903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12432863 + ... + 12433668.

It is an arithmetic number, because the mean of its divisors is an integer number (1392525792).

Almost surely, 2^10021211993 is an apocalyptic number.

10021211993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

10021211993 is a deficient number, since it is larger than the sum of its proper divisors (1118994343).

10021211993 is a wasteful number, since it uses less digits than its factorization.

10021211993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24866575.

The product of its (nonzero) digits is 972, while the sum is 29.

Adding to 10021211993 its reverse (39911212001), we get a palindrome (49932423994).

The spelling of 10021211993 in words is "ten billion, twenty-one million, two hundred eleven thousand, nine hundred ninety-three".