22121210210211 has 12 divisors (see below), whose sum is σ = 36517553362992. Its totient is φ = 12640691548656.

The previous prime is 22121210210173. The next prime is 22121210210237. The reversal of 22121210210211 is 11201201212122.

22121210210211 is a `hidden beast` number, since 2 + 21 + 212 + 10 + 210 + 211 = 666.

It is not a de Polignac number, because 22121210210211 - 2⁹ = 22121210209699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22121210210261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175565160336 + ... + 175565160461.

It is an arithmetic number, because the mean of its divisors is an integer number (3043129446916).

Almost surely, 2^{22121210210211} is an apocalyptic number.

22121210210211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22121210210211 is a deficient number, since it is larger than the sum of its proper divisors (14396343152781).

22121210210211 is a wasteful number, since it uses less digits than its factorization.

22121210210211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351130320810 (or 351130320807 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22121210210211 its reverse (11201201212122), we get a palindrome (33322411422333).

The spelling of 22121210210211 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred ten million, two hundred ten thousand, two hundred eleven".