2105121050450 has 48 divisors (see below), whose sum is σ = 4418774501760. Its totient is φ = 739102056000.

The previous prime is 2105121050443. The next prime is 2105121050467. The reversal of 2105121050450 is 540501215012.

It is a super-2 number, since 2×2105121050450² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65975306 + ... + 66007205.

It is an arithmetic number, because the mean of its divisors is an integer number (92057802120).

Almost surely, 2^{2105121050450} is an apocalyptic number.

2105121050450 is an abundant number, since it is smaller than the sum of its proper divisors (2313653451310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2105121050450 is a wasteful number, since it uses less digits than its factorization.

2105121050450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131982563 (or 131982558 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 2105121050450 its reverse (540501215012), we get a palindrome (2645622265462).

The spelling of 2105121050450 in words is "two trillion, one hundred five billion, one hundred twenty-one million, fifty thousand, four hundred fifty".