1021210002105 has 32 divisors (see below), whose sum is σ = 1636026992640. Its totient is φ = 543948672960.

The previous prime is 1021210002023. The next prime is 1021210002133. The reversal of 1021210002105 is 5012000121201.

1021210002105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021210002105 - 2²⁵ = 1021176447673 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 65274414 + ... + 65290056.

It is an arithmetic number, because the mean of its divisors is an integer number (51125843520).

Almost surely, 2^{1021210002105} is an apocalyptic number.

1021210002105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1021210002105 is a deficient number, since it is larger than the sum of its proper divisors (614816990535).

1021210002105 is a wasteful number, since it uses less digits than its factorization.

1021210002105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20941.

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

Adding to 1021210002105 its reverse (5012000121201), we get a palindrome (6033210123306).

The spelling of 1021210002105 in words is "one trillion, twenty-one billion, two hundred ten million, two thousand, one hundred five".