1202020322021 has 4 divisors (see below), whose sum is σ = 1202025043500. Its totient is φ = 1202015600544.

The previous prime is 1202020321991. The next prime is 1202020322081. The reversal of 1202020322021 is 1202230202021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 386772048100 + 815248273921 = 621910^2 + 902911^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202020322021 is a prime.

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 (1202020322081) 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, 1955696 + ... + 2495753.

It is an arithmetic number, because the mean of its divisors is an integer number (300506260875).

Almost surely, 2^{1202020322021} is an apocalyptic number.

It is an amenable number.

1202020322021 is a deficient number, since it is larger than the sum of its proper divisors (4721479).

1202020322021 is an equidigital number, since it uses as much as digits as its factorization.

1202020322021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4721478.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 1202020322021 its reverse (1202230202021), we get a palindrome (2404250524042).

The spelling of 1202020322021 in words is "one trillion, two hundred two billion, twenty million, three hundred twenty-two thousand, twenty-one".