1641565232122 has 4 divisors (see below), whose sum is σ = 2462347848186. Its totient is φ = 820782616060.

The previous prime is 1641565232119. The next prime is 1641565232123. The reversal of 1641565232122 is 2212325651461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1463758799881 + 177806432241 = 1209859^2 + 421671^2 .

It is a super-2 number, since 2×1641565232122² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1641565232123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410391308029 + ... + 410391308032.

Almost surely, 2^{1641565232122} is an apocalyptic number.

1641565232122 is a deficient number, since it is larger than the sum of its proper divisors (820782616064).

1641565232122 is an equidigital number, since it uses as much as digits as its factorization.

1641565232122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820782616063.

The product of its digits is 172800, while the sum is 40.

The spelling of 1641565232122 in words is "one trillion, six hundred forty-one billion, five hundred sixty-five million, two hundred thirty-two thousand, one hundred twenty-two".