220202120021 has 8 divisors (see below), whose sum is σ = 237145847904. Its totient is φ = 203259121200.

The previous prime is 220202120009. The next prime is 220202120027. The reversal of 220202120021 is 120021202022.

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 220202120021 - 2¹⁴ = 220202103637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220202119978 and 220202120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220202120027) 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, 555746 + ... + 865596.

It is an arithmetic number, because the mean of its divisors is an integer number (29643230988).

Almost surely, 2^220202120021 is an apocalyptic number.

It is an amenable number.

220202120021 is a deficient number, since it is larger than the sum of its proper divisors (16943727883).

220202120021 is a wasteful number, since it uses less digits than its factorization.

220202120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364531.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220202120021 its reverse (120021202022), we get a palindrome (340223322043).

The spelling of 220202120021 in words is "two hundred twenty billion, two hundred two million, one hundred twenty thousand, twenty-one".