2106122782542 has 64 divisors (see below), whose sum is σ = 4430937772800. Its totient is φ = 666542386944.

The previous prime is 2106122782523. The next prime is 2106122782553. The reversal of 2106122782542 is 2452872216012.

It is a junction number, because it is equal to n+sod(n) for n = 2106122782494 and 2106122782503.

It is a congruent number.

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, 9908593 + ... + 10118915.

It is an arithmetic number, because the mean of its divisors is an integer number (69233402700).

Almost surely, 2^{2106122782542} is an apocalyptic number.

2106122782542 is an abundant number, since it is smaller than the sum of its proper divisors (2324814990258).

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

2106122782542 is a wasteful number, since it uses less digits than its factorization.

2106122782542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211457.

The product of its (nonzero) digits is 215040, while the sum is 42.

Adding to 2106122782542 its reverse (2452872216012), we get a palindrome (4558994998554).

The spelling of 2106122782542 in words is "two trillion, one hundred six billion, one hundred twenty-two million, seven hundred eighty-two thousand, five hundred forty-two".