22102132221 has 24 divisors (see below), whose sum is σ = 34573200480. Its totient is φ = 13525314336.

The previous prime is 22102132183. The next prime is 22102132231. The reversal of 22102132221 is 12223120122.

It is not a de Polignac number, because 22102132221 - 2¹³ = 22102124029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22102132194 and 22102132203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102132231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 506731 + ... + 548616.

It is an arithmetic number, because the mean of its divisors is an integer number (1440550020).

Almost surely, 2^22102132221 is an apocalyptic number.

It is an amenable number.

22102132221 is a deficient number, since it is larger than the sum of its proper divisors (12471068259).

22102132221 is a wasteful number, since it uses less digits than its factorization.

22102132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055545 (or 1055542 counting only the distinct ones).

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

Adding to 22102132221 its reverse (12223120122), we get a palindrome (34325252343).

The spelling of 22102132221 in words is "twenty-two billion, one hundred two million, one hundred thirty-two thousand, two hundred twenty-one".