20220211212021 has 24 divisors (see below), whose sum is σ = 29904871778496. Its totient is φ = 13158424742400.

The previous prime is 20220211211971. The next prime is 20220211212043. The reversal of 20220211212021 is 12021211202202.

It is a happy number.

20220211212021 is a `hidden beast` number, since 2 + 0 + 220 + 211 + 212 + 0 + 21 = 666.

It is not a de Polignac number, because 20220211212021 - 2⁶ = 20220211211957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20220211211985 and 20220211212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220211212821) 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 23 ways as a sum of consecutive naturals, for example, 15697905 + ... + 16937078.

It is an arithmetic number, because the mean of its divisors is an integer number (1246036324104).

Almost surely, 2^{20220211212021} is an apocalyptic number.

It is an amenable number.

20220211212021 is a deficient number, since it is larger than the sum of its proper divisors (9684660566475).

20220211212021 is a wasteful number, since it uses less digits than its factorization.

20220211212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32636633 (or 32636630 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20220211212021 its reverse (12021211202202), we get a palindrome (32241422414223).

The spelling of 20220211212021 in words is "twenty trillion, two hundred twenty billion, two hundred eleven million, two hundred twelve thousand, twenty-one".