20212001222211 has 72 divisors (see below), whose sum is σ = 30609628673520. Its totient is φ = 12839732091648.

The previous prime is 20212001222197. The next prime is 20212001222213. The reversal of 20212001222211 is 11222210021202.

It is a happy number.

20212001222211 is a `hidden beast` number, since 20 + 212 + 0 + 0 + 1 + 222 + 211 = 666.

It is not a de Polignac number, because 20212001222211 - 2¹³ = 20212001214019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20212001222213) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 667730785 + ... + 667761053.

Almost surely, 2^{20212001222211} is an apocalyptic number.

20212001222211 is a deficient number, since it is larger than the sum of its proper divisors (10397627451309).

20212001222211 is a wasteful number, since it uses less digits than its factorization.

20212001222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30725 (or 30549 counting only the distinct ones).

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

Adding to 20212001222211 its reverse (11222210021202), we get a palindrome (31434211243413).

The spelling of 20212001222211 in words is "twenty trillion, two hundred twelve billion, one million, two hundred twenty-two thousand, two hundred eleven".