1201001121001 has 8 divisors (see below), whose sum is σ = 1310235721344. Its totient is φ = 1091775300720.

The previous prime is 1201001120923. The next prime is 1201001121013. The reversal of 1201001121001 is 1001211001021.

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 1201001121001 - 2¹³ = 1201001112809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201001121071) 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, 1907361 + ... + 2457646.

It is an arithmetic number, because the mean of its divisors is an integer number (163779465168).

Almost surely, 2^{1201001121001} is an apocalyptic number.

1201001121001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201001121001 is a deficient number, since it is larger than the sum of its proper divisors (109234600343).

1201001121001 is a wasteful number, since it uses less digits than its factorization.

1201001121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4390031.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1201001121001 its reverse (1001211001021), we get a palindrome (2202212122022).

The spelling of 1201001121001 in words is "one trillion, two hundred one billion, one million, one hundred twenty-one thousand, one".