210122213123 has 8 divisors (see below), whose sum is σ = 211745026416. Its totient is φ = 208505606400.

The previous prime is 210122213099. The next prime is 210122213149. The reversal of 210122213123 is 321312221012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210122213123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210122213095 and 210122213104.

It is not an unprimeable number, because it can be changed into a prime (210122213173) 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, 1483661 + ... + 1619102.

It is an arithmetic number, because the mean of its divisors is an integer number (26468128302).

Almost surely, 2^210122213123 is an apocalyptic number.

210122213123 is a deficient number, since it is larger than the sum of its proper divisors (1622813293).

210122213123 is a wasteful number, since it uses less digits than its factorization.

210122213123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103285.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 210122213123 its reverse (321312221012), we get a palindrome (531434434135).

The spelling of 210122213123 in words is "two hundred ten billion, one hundred twenty-two million, two hundred thirteen thousand, one hundred twenty-three".