20122121102211 has 24 divisors (see below), whose sum is σ = 30779854400880. Its totient is φ = 12623656651776.

The previous prime is 20122121102207. The next prime is 20122121102267. The reversal of 20122121102211 is 11220112122102.

20122121102211 is a `hidden beast` number, since 20 + 1 + 221 + 211 + 0 + 2 + 211 = 666.

It is not a de Polignac number, because 20122121102211 - 2² = 20122121102207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20122121102311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9378781 + ... + 11322798.

It is an arithmetic number, because the mean of its divisors is an integer number (1282493933370).

Almost surely, 2^{20122121102211} is an apocalyptic number.

20122121102211 is a deficient number, since it is larger than the sum of its proper divisors (10657733298669).

20122121102211 is a wasteful number, since it uses less digits than its factorization.

20122121102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20707955 (or 20707952 counting only the distinct ones).

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

Adding to 20122121102211 its reverse (11220112122102), we get a palindrome (31342233224313).

The spelling of 20122121102211 in words is "twenty trillion, one hundred twenty-two billion, one hundred twenty-one million, one hundred two thousand, two hundred eleven".