22321202121 has 48 divisors (see below), whose sum is σ = 33917893776. Its totient is φ = 14129676288.

The previous prime is 22321202093. The next prime is 22321202143. The reversal of 22321202121 is 12120212322.

22321202121 is a `hidden beast` number, since 22 + 321 + 202 + 121 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 344622096 + 21976580025 = 18564^2 + 148245^2 .

It is not a de Polignac number, because 22321202121 - 2¹³ = 22321193929 is a prime.

It is a super-3 number, since 3×22321202121³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22321202094 and 22321202103.

It is not an unprimeable number, because it can be changed into a prime (22321202021) 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, 3402981 + ... + 3409533.

It is an arithmetic number, because the mean of its divisors is an integer number (706622787).

Almost surely, 2^22321202121 is an apocalyptic number.

It is an amenable number.

22321202121 is a deficient number, since it is larger than the sum of its proper divisors (11596691655).

22321202121 is a wasteful number, since it uses less digits than its factorization.

22321202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6842 (or 6839 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22321202121 its reverse (12120212322), we get a palindrome (34441414443).

The spelling of 22321202121 in words is "twenty-two billion, three hundred twenty-one million, two hundred two thousand, one hundred twenty-one".