1201110010001 has 4 divisors (see below), whose sum is σ = 1310301829104. Its totient is φ = 1091918190900.

The previous prime is 1201110009997. The next prime is 1201110010049. The reversal of 1201110010001 is 1000100111021.

It is a happy number.

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 1201110010001 - 2² = 1201110009997 is a prime.

It is a super-2 number, since 2×1201110010001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201110013001) 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, 54595909535 + ... + 54595909556.

It is an arithmetic number, because the mean of its divisors is an integer number (327575457276).

Almost surely, 2^{1201110010001} is an apocalyptic number.

1201110010001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201110010001 is a deficient number, since it is larger than the sum of its proper divisors (109191819103).

1201110010001 is a wasteful number, since it uses less digits than its factorization.

1201110010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109191819102.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1201110010001 its reverse (1000100111021), we get a palindrome (2201210121022).

The spelling of 1201110010001 in words is "one trillion, two hundred one billion, one hundred ten million, ten thousand, one".