2121662050505 has 8 divisors (see below), whose sum is σ = 2546067270600. Its totient is φ = 1697281100416.

The previous prime is 2121662050489. The next prime is 2121662050513. The reversal of 2121662050505 is 5050502661212.

It can be written as a sum of positive squares in 4 ways, for example, as 786336203536 + 1335325846969 = 886756^2 + 1155563^2 .

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 2121662050505 - 2⁴ = 2121662050489 is a prime.

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, 5874620 + ... + 6225309.

It is an arithmetic number, because the mean of its divisors is an integer number (318258408825).

Almost surely, 2^{2121662050505} is an apocalyptic number.

It is an amenable number.

2121662050505 is a deficient number, since it is larger than the sum of its proper divisors (424405220095).

2121662050505 is a wasteful number, since it uses less digits than its factorization.

2121662050505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12135003.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 2121662050505 in words is "two trillion, one hundred twenty-one billion, six hundred sixty-two million, fifty thousand, five hundred five".