1201120221001 has 4 divisors (see below), whose sum is σ = 1226675970432. Its totient is φ = 1175564471572.

The previous prime is 1201120220983. The next prime is 1201120221029. The reversal of 1201120221001 is 1001220211021.

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 1201120221001 - 2⁷ = 1201120220873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201120021001) 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, 12777874645 + ... + 12777874738.

It is an arithmetic number, because the mean of its divisors is an integer number (306668992608).

Almost surely, 2^{1201120221001} is an apocalyptic number.

It is an amenable number.

1201120221001 is a deficient number, since it is larger than the sum of its proper divisors (25555749431).

1201120221001 is an equidigital number, since it uses as much as digits as its factorization.

1201120221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25555749430.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1201120221001 its reverse (1001220211021), we get a palindrome (2202340432022).

The spelling of 1201120221001 in words is "one trillion, two hundred one billion, one hundred twenty million, two hundred twenty-one thousand, one".