1201011221001 has 8 divisors (see below), whose sum is σ = 1627599906304. Its totient is φ = 787548341520.

The previous prime is 1201011220999. The next prime is 1201011221009. The reversal of 1201011221001 is 1001221101021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1201011221001 - 2¹ = 1201011220999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201011221009) 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, 3281451241 + ... + 3281451606.

It is an arithmetic number, because the mean of its divisors is an integer number (203449988288).

Almost surely, 2^{1201011221001} is an apocalyptic number.

It is an amenable number.

1201011221001 is a deficient number, since it is larger than the sum of its proper divisors (426588685303).

1201011221001 is an equidigital number, since it uses as much as digits as its factorization.

1201011221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6562902911.

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

Adding to 1201011221001 its reverse (1001221101021), we get a palindrome (2202232322022).

The spelling of 1201011221001 in words is "one trillion, two hundred one billion, eleven million, two hundred twenty-one thousand, one".