2152120223105 has 8 divisors (see below), whose sum is σ = 2595925327272. Its totient is φ = 1712775472128.

The previous prime is 2152120223087. The next prime is 2152120223129. The reversal of 2152120223105 is 5013220212512.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6577858816 + 2145542364289 = 81104^2 + 1464767^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2152120223105 - 2⁸ = 2152120222849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1115087234 + ... + 1115089163.

It is an arithmetic number, because the mean of its divisors is an integer number (324490665909).

Almost surely, 2^{2152120223105} is an apocalyptic number.

It is an amenable number.

2152120223105 is a deficient number, since it is larger than the sum of its proper divisors (443805104167).

2152120223105 is a wasteful number, since it uses less digits than its factorization.

2152120223105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230176595.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 2152120223105 its reverse (5013220212512), we get a palindrome (7165340435617).

The spelling of 2152120223105 in words is "two trillion, one hundred fifty-two billion, one hundred twenty million, two hundred twenty-three thousand, one hundred five".