2145521022 has 8 divisors (see below), whose sum is σ = 4291042056. Its totient is φ = 715173672.

The previous prime is 2145521009. The next prime is 2145521041. The reversal of 2145521022 is 2201255412.

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

2145521022 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2145520983 and 2145521001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178793413 + ... + 178793424.

It is an arithmetic number, because the mean of its divisors is an integer number (536380257).

Almost surely, 2^2145521022 is an apocalyptic number.

2145521022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2145521022 is a wasteful number, since it uses less digits than its factorization.

2145521022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357586842.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2145521022 is about 46319.7692351765. The cubic root of 2145521022 is about 1289.7660016646.

Adding to 2145521022 its reverse (2201255412), we get a palindrome (4346776434).

The spelling of 2145521022 in words is "two billion, one hundred forty-five million, five hundred twenty-one thousand, twenty-two".