1210111123321 has 8 divisors (see below), whose sum is σ = 1247705563104. Its totient is φ = 1172946334560.

The previous prime is 1210111123313. The next prime is 1210111123343. The reversal of 1210111123321 is 1233211110121.

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 1210111123321 - 2³ = 1210111123313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210111121321) 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, 107407036 + ... + 107418301.

It is an arithmetic number, because the mean of its divisors is an integer number (155963195388).

Almost surely, 2^{1210111123321} is an apocalyptic number.

It is an amenable number.

1210111123321 is a deficient number, since it is larger than the sum of its proper divisors (37594439783).

1210111123321 is a wasteful number, since it uses less digits than its factorization.

1210111123321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214825511.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1210111123321 its reverse (1233211110121), we get a palindrome (2443322233442).

The spelling of 1210111123321 in words is "one trillion, two hundred ten billion, one hundred eleven million, one hundred twenty-three thousand, three hundred twenty-one".