202221212110101 has 6 divisors (see below), whose sum is σ = 292097306381270. Its totient is φ = 134814141406728.

The previous prime is 202221212110061. The next prime is 202221212110117. The reversal of 202221212110101 is 101011212122202.

202221212110101 is a `hidden beast` number, since 20 + 2 + 221 + 212 + 110 + 101 = 666.

It can be written as a sum of positive squares in only one way, i.e., 202218211919025 + 3000191076 = 14220345^2 + 54774^2 .

It is not a de Polignac number, because 202221212110101 - 2²¹ = 202221210012949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221212120101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11234511783886 + ... + 11234511783903.

Almost surely, 2^{202221212110101} is an apocalyptic number.

It is an amenable number.

202221212110101 is a deficient number, since it is larger than the sum of its proper divisors (89876094271169).

202221212110101 is a wasteful number, since it uses less digits than its factorization.

202221212110101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22469023567795 (or 22469023567792 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 202221212110101 its reverse (101011212122202), we get a palindrome (303232424232303).

The spelling of 202221212110101 in words is "two hundred two trillion, two hundred twenty-one billion, two hundred twelve million, one hundred ten thousand, one hundred one".