2145061661222 has 8 divisors (see below), whose sum is σ = 3218175511200. Its totient is φ = 1072336490824.

The previous prime is 2145061661221. The next prime is 2145061661233. The reversal of 2145061661222 is 2221661605412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145061661221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97156097 + ... + 97178172.

It is an arithmetic number, because the mean of its divisors is an integer number (402271938900).

Almost surely, 2^{2145061661222} is an apocalyptic number.

2145061661222 is a deficient number, since it is larger than the sum of its proper divisors (1073113849978).

2145061661222 is a wasteful number, since it uses less digits than its factorization.

2145061661222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194339790.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 2145061661222 in words is "two trillion, one hundred forty-five billion, sixty-one million, six hundred sixty-one thousand, two hundred twenty-two".