10021111020105 has 96 divisors (see below), whose sum is σ = 17763590283264. Its totient is φ = 4814143880832.

The previous prime is 10021111020083. The next prime is 10021111020131. The reversal of 10021111020105 is 50102011112001.

It is not a de Polignac number, because 10021111020105 - 2¹² = 10021111016009 is a prime.

It is a super-2 number, since 2×10021111020105² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20558112 + ... + 21039918.

It is an arithmetic number, because the mean of its divisors is an integer number (185037398784).

Almost surely, 2^{10021111020105} is an apocalyptic number.

10021111020105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10021111020105 is a deficient number, since it is larger than the sum of its proper divisors (7742479263159).

10021111020105 is a wasteful number, since it uses less digits than its factorization.

10021111020105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482043 (or 482024 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 15.

Adding to 10021111020105 its reverse (50102011112001), we get a palindrome (60123122132106).

The spelling of 10021111020105 in words is "ten trillion, twenty-one billion, one hundred eleven million, twenty thousand, one hundred five".