22012011021209 has 4 divisors (see below), whose sum is σ = 24013102932240. Its totient is φ = 20010919110180.

The previous prime is 22012011021197. The next prime is 22012011021233. The reversal of 22012011021209 is 90212011021022.

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 22012011021209 - 2²⁸ = 22011742585753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012011021289) 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, 1000545955499 + ... + 1000545955520.

It is an arithmetic number, because the mean of its divisors is an integer number (6003275733060).

Almost surely, 2^{22012011021209} is an apocalyptic number.

It is an amenable number.

22012011021209 is a deficient number, since it is larger than the sum of its proper divisors (2001091911031).

22012011021209 is a wasteful number, since it uses less digits than its factorization.

22012011021209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001091911030.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 22012011021209 in words is "twenty-two trillion, twelve billion, eleven million, twenty-one thousand, two hundred nine".