22101201112221 has 48 divisors (see below), whose sum is σ = 39807134040960. Its totient is φ = 11479459743360.

The previous prime is 22101201112213. The next prime is 22101201112231. The reversal of 22101201112221 is 12221110210122.

22101201112221 is a `hidden beast` number, since 2 + 210 + 120 + 1 + 112 + 221 = 666.

It is not a de Polignac number, because 22101201112221 - 2³ = 22101201112213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22101201112194 and 22101201112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101201112231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2397451 + ... + 7067543.

It is an arithmetic number, because the mean of its divisors is an integer number (829315292520).

Almost surely, 2^{22101201112221} is an apocalyptic number.

22101201112221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22101201112221 is a deficient number, since it is larger than the sum of its proper divisors (17705932928739).

22101201112221 is a wasteful number, since it uses less digits than its factorization.

22101201112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676946 (or 4676943 counting only the distinct ones).

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

Adding to 22101201112221 its reverse (12221110210122), we get a palindrome (34322311322343).

The spelling of 22101201112221 in words is "twenty-two trillion, one hundred one billion, two hundred one million, one hundred twelve thousand, two hundred twenty-one".