220211201202021 has 24 divisors (see below), whose sum is σ = 338275842952320. Its totient is φ = 137646936389376.

The previous prime is 220211201202011. The next prime is 220211201202079. The reversal of 220211201202021 is 120202102112022.

It is a happy number.

220211201202021 is a `hidden beast` number, since 220 + 2 + 1 + 120 + 120 + 202 + 1 = 666.

It is not a de Polignac number, because 220211201202021 - 2²² = 220211197007717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220211201201985 and 220211201202003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220211201202011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6638049405 + ... + 6638082578.

It is an arithmetic number, because the mean of its divisors is an integer number (14094826789680).

Almost surely, 2^{220211201202021} is an apocalyptic number.

It is an amenable number.

220211201202021 is a deficient number, since it is larger than the sum of its proper divisors (118064641750299).

220211201202021 is a wasteful number, since it uses less digits than its factorization.

220211201202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13276132105 (or 13276132102 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220211201202021 its reverse (120202102112022), we get a palindrome (340413303314043).

The spelling of 220211201202021 in words is "two hundred twenty trillion, two hundred eleven billion, two hundred one million, two hundred two thousand, twenty-one".