1202020201021 has 16 divisors (see below), whose sum is σ = 1246938148800. Its totient is φ = 1157337417600.

The previous prime is 1202020201013. The next prime is 1202020201027. The reversal of 1202020201021 is 1201020202021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1202020201021 - 2³ = 1202020201013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202020200992 and 1202020201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202020201027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17658670 + ... + 17726608.

It is an arithmetic number, because the mean of its divisors is an integer number (77933634300).

Almost surely, 2^{1202020201021} is an apocalyptic number.

It is an amenable number.

1202020201021 is a deficient number, since it is larger than the sum of its proper divisors (44917947779).

1202020201021 is a wasteful number, since it uses less digits than its factorization.

1202020201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69660.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1202020201021 its reverse (1201020202021), we get a palindrome (2403040403042).

It can be divided in two parts, 1202020 and 201021, that added together give a palindrome (1403041).

The spelling of 1202020201021 in words is "one trillion, two hundred two billion, twenty million, two hundred one thousand, twenty-one".