2111521541046 has 32 divisors (see below), whose sum is σ = 4377713817600. Its totient is φ = 678417623136.

The previous prime is 2111521541033. The next prime is 2111521541047. The reversal of 2111521541046 is 6401451251112.

It is a junction number, because it is equal to n+sod(n) for n = 2111521540998 and 2111521541016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111521541047) 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, 44421846 + ... + 44469353.

It is an arithmetic number, because the mean of its divisors is an integer number (136803556800).

Almost surely, 2^{2111521541046} is an apocalyptic number.

2111521541046 is an abundant number, since it is smaller than the sum of its proper divisors (2266192276554).

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

2111521541046 is a wasteful number, since it uses less digits than its factorization.

2111521541046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88891348.

The product of its (nonzero) digits is 9600, while the sum is 33.

Adding to 2111521541046 its reverse (6401451251112), we get a palindrome (8512972792158).

The spelling of 2111521541046 in words is "two trillion, one hundred eleven billion, five hundred twenty-one million, five hundred forty-one thousand, forty-six".