1202201021 has 8 divisors (see below), whose sum is σ = 1376027904. Its totient is φ = 1028895120.

The previous prime is 1202200997. The next prime is 1202201023. The reversal of 1202201021 is 1201022021.

It is a happy number.

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 1202201021 - 2⁶ = 1202200957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202200993 and 1202201011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202201023) 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, 125285 + ... + 134538.

It is an arithmetic number, because the mean of its divisors is an integer number (172003488).

Almost surely, 2^1202201021 is an apocalyptic number.

It is an amenable number.

1202201021 is a deficient number, since it is larger than the sum of its proper divisors (173826883).

1202201021 is an equidigital number, since it uses as much as digits as its factorization.

1202201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260491.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1202201021 is about 34672.7705988431. The cubic root of 1202201021 is about 1063.3078762021.

Adding to 1202201021 its reverse (1201022021), we get a palindrome (2403223042).

The spelling of 1202201021 in words is "one billion, two hundred two million, two hundred one thousand, twenty-one".