2000121210105 has 16 divisors (see below), whose sum is σ = 3200708834304. Its totient is φ = 1066559679360.

The previous prime is 2000121210091. The next prime is 2000121210107. The reversal of 2000121210105 is 5010121210002.

It is not a de Polignac number, because 2000121210105 - 2¹⁶ = 2000121144569 is a prime.

It is a super-2 number, since 2×2000121210105² (a number of 25 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2000121210107) 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, 10630681 + ... + 10817190.

It is an arithmetic number, because the mean of its divisors is an integer number (200044302144).

Almost surely, 2^{2000121210105} is an apocalyptic number.

It is an amenable number.

2000121210105 is a deficient number, since it is larger than the sum of its proper divisors (1200587624199).

2000121210105 is a wasteful number, since it uses less digits than its factorization.

2000121210105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21454096.

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

Adding to 2000121210105 its reverse (5010121210002), we get a palindrome (7010242420107).

The spelling of 2000121210105 in words is "two trillion, one hundred twenty-one million, two hundred ten thousand, one hundred five".