1210211011121 has 8 divisors (see below), whose sum is σ = 1383125525184. Its totient is φ = 1037303303760.

The previous prime is 1210211011109. The next prime is 1210211011237. The reversal of 1210211011121 is 1211101120121.

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 1210211011121 - 2⁶ = 1210211011057 is a prime.

It is a super-2 number, since 2×1210211011121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1210211011096 and 1210211011105.

It is not an unprimeable number, because it can be changed into a prime (1210211311121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1314815 + ... + 2036948.

It is an arithmetic number, because the mean of its divisors is an integer number (172890690648).

Almost surely, 2^{1210211011121} is an apocalyptic number.

It is an amenable number.

1210211011121 is a deficient number, since it is larger than the sum of its proper divisors (172914514063).

1210211011121 is an equidigital number, since it uses as much as digits as its factorization.

1210211011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403351.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1210211011121 its reverse (1211101120121), we get a palindrome (2421312131242).

The spelling of 1210211011121 in words is "one trillion, two hundred ten billion, two hundred eleven million, eleven thousand, one hundred twenty-one".