10111210021 has 8 divisors (see below), whose sum is σ = 11509994304. Its totient is φ = 8792356320.

The previous prime is 10111210009. The next prime is 10111210033. The reversal of 10111210021 is 12001211101.

It is an interprime number because it is at equal distance from previous prime (10111210009) and next prime (10111210033).

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

It is not a de Polignac number, because 10111210021 - 2⁷ = 10111209893 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 (10111210051) 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, 19982376 + ... + 19982881.

It is an arithmetic number, because the mean of its divisors is an integer number (1438749288).

Almost surely, 2^10111210021 is an apocalyptic number.

10111210021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10111210021 is a deficient number, since it is larger than the sum of its proper divisors (1398784283).

10111210021 is a wasteful number, since it uses less digits than its factorization.

10111210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39965291.

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

Adding to 10111210021 its reverse (12001211101), we get a palindrome (22112421122).

The spelling of 10111210021 in words is "ten billion, one hundred eleven million, two hundred ten thousand, twenty-one".