2161142235102 has 96 divisors (see below), whose sum is σ = 4788199694880. Its totient is φ = 649071216640.

The previous prime is 2161142235053. The next prime is 2161142235149. The reversal of 2161142235102 is 2015322411612.

It is a self number, because there is not a number n which added to its sum of digits gives 2161142235102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3487558 + ... + 4060214.

It is an arithmetic number, because the mean of its divisors is an integer number (49877080155).

Almost surely, 2^{2161142235102} is an apocalyptic number.

2161142235102 is an abundant number, since it is smaller than the sum of its proper divisors (2627057459778).

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

2161142235102 is a wasteful number, since it uses less digits than its factorization.

2161142235102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572778 (or 572755 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 2161142235102 its reverse (2015322411612), we get a palindrome (4176464646714).

The spelling of 2161142235102 in words is "two trillion, one hundred sixty-one billion, one hundred forty-two million, two hundred thirty-five thousand, one hundred two".