22001203213 has 4 divisors (see below), whose sum is σ = 24001312608. Its totient is φ = 20001093820.

The previous prime is 22001203193. The next prime is 22001203261. The reversal of 22001203213 is 31230210022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22001203213 - 2¹⁷ = 22001072141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001203613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000054681 + ... + 1000054702.

It is an arithmetic number, because the mean of its divisors is an integer number (6000328152).

Almost surely, 2^22001203213 is an apocalyptic number.

It is an amenable number.

22001203213 is a deficient number, since it is larger than the sum of its proper divisors (2000109395).

22001203213 is a wasteful number, since it uses less digits than its factorization.

22001203213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000109394.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 22001203213 its reverse (31230210022), we get a palindrome (53231413235).

The spelling of 22001203213 in words is "twenty-two billion, one million, two hundred three thousand, two hundred thirteen".