2123122556211 has 8 divisors (see below), whose sum is σ = 2953909643520. Its totient is φ = 1353875253192.

The previous prime is 2123122556207. The next prime is 2123122556249. The reversal of 2123122556211 is 1126552213212.

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

It is not a de Polignac number, because 2123122556211 - 2² = 2123122556207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2123122556251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15384945991 + ... + 15384946128.

It is an arithmetic number, because the mean of its divisors is an integer number (369238705440).

Almost surely, 2^{2123122556211} is an apocalyptic number.

2123122556211 is a deficient number, since it is larger than the sum of its proper divisors (830787087309).

2123122556211 is a wasteful number, since it uses less digits than its factorization.

2123122556211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30769892145.

The product of its digits is 14400, while the sum is 33.

Adding to 2123122556211 its reverse (1126552213212), we get a palindrome (3249674769423).

The spelling of 2123122556211 in words is "two trillion, one hundred twenty-three billion, one hundred twenty-two million, five hundred fifty-six thousand, two hundred eleven".