2021011210005 has 16 divisors (see below), whose sum is σ = 3235846515264. Its totient is φ = 1077129785600.

The previous prime is 2021011210003. The next prime is 2021011210109. The reversal of 2021011210005 is 5000121101202.

It is not a de Polignac number, because 2021011210005 - 2¹ = 2021011210003 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021011210003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46406244 + ... + 46449773.

It is an arithmetic number, because the mean of its divisors is an integer number (202240407204).

Almost surely, 2^{2021011210005} is an apocalyptic number.

It is an amenable number.

2021011210005 is a deficient number, since it is larger than the sum of its proper divisors (1214835305259).

2021011210005 is a wasteful number, since it uses less digits than its factorization.

2021011210005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92857476.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 2021011210005 its reverse (5000121101202), we get a palindrome (7021132311207).

The spelling of 2021011210005 in words is "two trillion, twenty-one billion, eleven million, two hundred ten thousand, five".