20122120123211 has 8 divisors (see below), whose sum is σ = 20322500950800. Its totient is φ = 19921761882400.

The previous prime is 20122120123201. The next prime is 20122120123213. The reversal of 20122120123211 is 11232102122102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20122120123211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122120123213) 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, 3853241 + ... + 7422378.

It is an arithmetic number, because the mean of its divisors is an integer number (2540312618850).

Almost surely, 2^{20122120123211} is an apocalyptic number.

20122120123211 is a deficient number, since it is larger than the sum of its proper divisors (200380827589).

20122120123211 is a wasteful number, since it uses less digits than its factorization.

20122120123211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11293389.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20122120123211 its reverse (11232102122102), we get a palindrome (31354222245313).

The spelling of 20122120123211 in words is "twenty trillion, one hundred twenty-two billion, one hundred twenty million, one hundred twenty-three thousand, two hundred eleven".