20210222121211 has 4 divisors (see below), whose sum is σ = 20345861196000. Its totient is φ = 20074583046424.

The previous prime is 20210222121179. The next prime is 20210222121217. The reversal of 20210222121211 is 11212122201202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20210222121211 - 2⁵ = 20210222121179 is a prime.

It is a super-2 number, since 2×20210222121211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20210222121217) 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, 67819537171 + ... + 67819537468.

It is an arithmetic number, because the mean of its divisors is an integer number (5086465299000).

Almost surely, 2^{20210222121211} is an apocalyptic number.

20210222121211 is a deficient number, since it is larger than the sum of its proper divisors (135639074789).

20210222121211 is a wasteful number, since it uses less digits than its factorization.

20210222121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135639074788.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20210222121211 its reverse (11212122201202), we get a palindrome (31422344322413).

The spelling of 20210222121211 in words is "twenty trillion, two hundred ten billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred eleven".