2161063022250 has 128 divisors (see below), whose sum is σ = 6230518444800. Its totient is φ = 493076736000.

The previous prime is 2161063022249. The next prime is 2161063022299. The reversal of 2161063022250 is 522203601612.

It is a super-2 number, since 2×2161063022250² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7564075 + ... + 7844574.

It is an arithmetic number, because the mean of its divisors is an integer number (48675925350).

Almost surely, 2^{2161063022250} is an apocalyptic number.

2161063022250 is an abundant number, since it is smaller than the sum of its proper divisors (4069455422550).

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

2161063022250 is a wasteful number, since it uses less digits than its factorization.

2161063022250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15408697 (or 15408687 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 2161063022250 its reverse (522203601612), we get a palindrome (2683266623862).

The spelling of 2161063022250 in words is "two trillion, one hundred sixty-one billion, sixty-three million, twenty-two thousand, two hundred fifty".