22011213501 has 12 divisors (see below), whose sum is σ = 31914868128. Its totient is φ = 14618345544.

The previous prime is 22011213481. The next prime is 22011213559. The reversal of 22011213501 is 10531211022.

It is not a de Polignac number, because 22011213501 - 2¹³ = 22011205309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011213001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4647235 + ... + 4651968.

It is an arithmetic number, because the mean of its divisors is an integer number (2659572344).

Almost surely, 2^22011213501 is an apocalyptic number.

It is an amenable number.

22011213501 is a deficient number, since it is larger than the sum of its proper divisors (9903654627).

22011213501 is a wasteful number, since it uses less digits than its factorization.

22011213501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9299472 (or 9299469 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 22011213501 its reverse (10531211022), we get a palindrome (32542424523).

The spelling of 22011213501 in words is "twenty-two billion, eleven million, two hundred thirteen thousand, five hundred one".