1210120001121 has 4 divisors (see below), whose sum is σ = 1613493334832. Its totient is φ = 806746667412.

The previous prime is 1210120001053. The next prime is 1210120001213. The reversal of 1210120001121 is 1211000210121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1210120001121 - 2⁷ = 1210120000993 is a prime.

It is a super-2 number, since 2×1210120001121² (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 = 1210120001097 and 1210120001106.

It is not an unprimeable number, because it can be changed into a prime (1210120001021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201686666851 + ... + 201686666856.

It is an arithmetic number, because the mean of its divisors is an integer number (403373333708).

Almost surely, 2^{1210120001121} is an apocalyptic number.

It is an amenable number.

1210120001121 is a deficient number, since it is larger than the sum of its proper divisors (403373333711).

1210120001121 is an equidigital number, since it uses as much as digits as its factorization.

1210120001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403373333710.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1210120001121 its reverse (1211000210121), we get a palindrome (2421120211242).

The spelling of 1210120001121 in words is "one trillion, two hundred ten billion, one hundred twenty million, one thousand, one hundred twenty-one".