202220201101021 has 8 divisors (see below), whose sum is σ = 204222670281144. Its totient is φ = 200217737587200.

The previous prime is 202220201101013. The next prime is 202220201101031. The reversal of 202220201101021 is 120101102022202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 46639133611225 + 155581067489796 = 6829285^2 + 12473214^2 .

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 202220201101021 - 2³ = 202220201101013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202220201100986 and 202220201101004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202220201101031) 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, 135656485 + ... + 137139061.

It is an arithmetic number, because the mean of its divisors is an integer number (25527833785143).

Almost surely, 2^{202220201101021} is an apocalyptic number.

It is an amenable number.

202220201101021 is a deficient number, since it is larger than the sum of its proper divisors (2002469180123).

202220201101021 is a wasteful number, since it uses less digits than its factorization.

202220201101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833151.

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

Adding to 202220201101021 its reverse (120101102022202), we get a palindrome (322321303123223).

The spelling of 202220201101021 in words is "two hundred two trillion, two hundred twenty billion, two hundred one million, one hundred one thousand, twenty-one".