22001213235 has 16 divisors (see below), whose sum is σ = 35204082336. Its totient is φ = 11733266688.

The previous prime is 22001213231. The next prime is 22001213251. The reversal of 22001213235 is 53231210022.

It is not a de Polignac number, because 22001213235 - 2² = 22001213231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22001213231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292317 + ... + 359793.

It is an arithmetic number, because the mean of its divisors is an integer number (2200255146).

Almost surely, 2^22001213235 is an apocalyptic number.

22001213235 is a deficient number, since it is larger than the sum of its proper divisors (13202869101).

22001213235 is a wasteful number, since it uses less digits than its factorization.

22001213235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89222.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 22001213235 its reverse (53231210022), we get a palindrome (75232423257).

The spelling of 22001213235 in words is "twenty-two billion, one million, two hundred thirteen thousand, two hundred thirty-five".