202122012012221 has 8 divisors (see below), whose sum is σ = 230996760292224. Its totient is φ = 173247307516080.

The previous prime is 202122012012187. The next prime is 202122012012233. The reversal of 202122012012221 is 122210210221202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202122012012221 - 2¹⁴ = 202122011995837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202122012012193 and 202122012012202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202122012012241) 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, 372905 + ... + 20109278.

It is an arithmetic number, because the mean of its divisors is an integer number (28874595036528).

Almost surely, 2^{202122012012221} is an apocalyptic number.

It is an amenable number.

202122012012221 is a deficient number, since it is larger than the sum of its proper divisors (28874748280003).

202122012012221 is a wasteful number, since it uses less digits than its factorization.

202122012012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21891931.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 202122012012221 its reverse (122210210221202), we get a palindrome (324332222233423).

The spelling of 202122012012221 in words is "two hundred two trillion, one hundred twenty-two billion, twelve million, twelve thousand, two hundred twenty-one".