1210020211121 has 8 divisors (see below), whose sum is σ = 1211641576704. Its totient is φ = 1208399354800.

The previous prime is 1210020211097. The next prime is 1210020211133. The reversal of 1210020211121 is 1211120200121.

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 1210020211121 - 2¹⁴ = 1210020194737 is a prime.

It is a super-2 number, since 2×1210020211121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210020211096 and 1210020211105.

It is not an unprimeable number, because it can be changed into a prime (1210020211151) 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, 4752755 + ... + 5000871.

It is an arithmetic number, because the mean of its divisors is an integer number (151455197088).

Almost surely, 2^{1210020211121} is an apocalyptic number.

It is an amenable number.

1210020211121 is a deficient number, since it is larger than the sum of its proper divisors (1621365583).

1210020211121 is an equidigital number, since it uses as much as digits as its factorization.

1210020211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254631.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1210020211121 its reverse (1211120200121), we get a palindrome (2421140411242).

The spelling of 1210020211121 in words is "one trillion, two hundred ten billion, twenty million, two hundred eleven thousand, one hundred twenty-one".