20212022091 has 8 divisors (see below), whose sum is σ = 27878651280. Its totient is φ = 13010037152.

The previous prime is 20212022053. The next prime is 20212022093. The reversal of 20212022091 is 19022021202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20212022091 - 2⁹ = 20212021579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20212022093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116160960 + ... + 116161133.

It is an arithmetic number, because the mean of its divisors is an integer number (3484831410).

Almost surely, 2^20212022091 is an apocalyptic number.

20212022091 is a deficient number, since it is larger than the sum of its proper divisors (7666629189).

20212022091 is a wasteful number, since it uses less digits than its factorization.

20212022091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232322125.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20212022091 its reverse (19022021202), we get a palindrome (39234043293).

The spelling of 20212022091 in words is "twenty billion, two hundred twelve million, twenty-two thousand, ninety-one".