1201441021 has 4 divisors (see below), whose sum is σ = 1310662944. Its totient is φ = 1092219100.

The previous prime is 1201441001. The next prime is 1201441039.

It is a happy number.

1201441021 is nontrivially palindromic in base 10.

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 1201441021 - 2¹³ = 1201432829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201440986 and 1201441004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201441001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54610945 + ... + 54610966.

It is an arithmetic number, because the mean of its divisors is an integer number (327665736).

Almost surely, 2^1201441021 is an apocalyptic number.

1201441021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201441021 is a deficient number, since it is larger than the sum of its proper divisors (109221923).

1201441021 is a wasteful number, since it uses less digits than its factorization.

1201441021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109221922.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1201441021 is about 34661.8092574522. The cubic root of 1201441021 is about 1063.0837638390.

It can be divided in two parts, 12014 and 41021, that added together give a palindrome (53035).

The spelling of 1201441021 in words is "one billion, two hundred one million, four hundred forty-one thousand, twenty-one".