1202021 has 8 divisors (see below), whose sum is σ = 1255800. Its totient is φ = 1149120.

The previous prime is 1202017. The next prime is 1202023.

1202021 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 122500 + 1079521 = 350^2 + 1039^2 .

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 1202021 - 2² = 1202017 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5135 + ... + 5363.

It is an arithmetic number, because the mean of its divisors is an integer number (156975).

2^1202021 is an apocalyptic number.

It is an amenable number.

1202021 is a deficient number, since it is larger than the sum of its proper divisors (53779).

1202021 is a wasteful number, since it uses less digits than its factorization.

1202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439.

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

The square root of 1202021 is about 1096.3671830185. The cubic root of 1202021 is about 106.3254799304.

The spelling of 1202021 in words is "one million, two hundred two thousand, twenty-one".