1201110220121 has 4 divisors (see below), whose sum is σ = 1372697394432. Its totient is φ = 1029523045812.

The previous prime is 1201110220117. The next prime is 1201110220187. The reversal of 1201110220121 is 1210220111021.

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 a cyclic number.

It is not a de Polignac number, because 1201110220121 - 2² = 1201110220117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201110220096 and 1201110220105.

It is not an unprimeable number, because it can be changed into a prime (1201110222121) 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, 85793587145 + ... + 85793587158.

It is an arithmetic number, because the mean of its divisors is an integer number (343174348608).

Almost surely, 2^{1201110220121} is an apocalyptic number.

It is an amenable number.

1201110220121 is a deficient number, since it is larger than the sum of its proper divisors (171587174311).

1201110220121 is an equidigital number, since it uses as much as digits as its factorization.

1201110220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171587174310.

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

Adding to 1201110220121 its reverse (1210220111021), we get a palindrome (2411330331142).

The spelling of 1201110220121 in words is "one trillion, two hundred one billion, one hundred ten million, two hundred twenty thousand, one hundred twenty-one".