210022020011221 has 8 divisors (see below), whose sum is σ = 229115725612704. Its totient is φ = 190928446858320.

The previous prime is 210022020011207. The next prime is 210022020011249. The reversal of 210022020011221 is 122110020220012.

It is a happy number.

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 210022020011221 - 2⁹ = 210022020010709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210022020011195 and 210022020011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210022020011021) 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, 29782051 + ... + 36152656.

It is an arithmetic number, because the mean of its divisors is an integer number (28639465701588).

Almost surely, 2^{210022020011221} is an apocalyptic number.

It is an amenable number.

210022020011221 is a deficient number, since it is larger than the sum of its proper divisors (19093705601483).

210022020011221 is a wasteful number, since it uses less digits than its factorization.

210022020011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66224291.

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

Adding to 210022020011221 its reverse (122110020220012), we get a palindrome (332132040231233).

The spelling of 210022020011221 in words is "two hundred ten trillion, twenty-two billion, twenty million, eleven thousand, two hundred twenty-one".