1201121112101 has 4 divisors (see below), whose sum is σ = 1209075556704. Its totient is φ = 1193166667500.

The previous prime is 1201121112089. The next prime is 1201121112133. The reversal of 1201121112101 is 1012111211021.

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 a de Polignac number, because none of the positive numbers 2^k-1201121112101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201121112181) 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, 3977222075 + ... + 3977222376.

It is an arithmetic number, because the mean of its divisors is an integer number (302268889176).

Almost surely, 2^{1201121112101} is an apocalyptic number.

It is an amenable number.

1201121112101 is a deficient number, since it is larger than the sum of its proper divisors (7954444603).

1201121112101 is an equidigital number, since it uses as much as digits as its factorization.

1201121112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7954444602.

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

Adding to 1201121112101 its reverse (1012111211021), we get a palindrome (2213232323122).

The spelling of 1201121112101 in words is "one trillion, two hundred one billion, one hundred twenty-one million, one hundred twelve thousand, one hundred one".