122101211212221 has 32 divisors (see below), whose sum is σ = 166732080463872. Its totient is φ = 79438868308800.

The previous prime is 122101211212219. The next prime is 122101211212241. The reversal of 122101211212221 is 122212112101221.

It is not a de Polignac number, because 122101211212221 - 2¹ = 122101211212219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122101211212241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2071483876 + ... + 2071542818.

It is an arithmetic number, because the mean of its divisors is an integer number (5210377514496).

Almost surely, 2^{122101211212221} is an apocalyptic number.

It is an amenable number.

122101211212221 is a deficient number, since it is larger than the sum of its proper divisors (44630869251651).

122101211212221 is a wasteful number, since it uses less digits than its factorization.

122101211212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72633.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 122101211212221 its reverse (122212112101221), we get a palindrome (244313323313442).

The spelling of 122101211212221 in words is "one hundred twenty-two trillion, one hundred one billion, two hundred eleven million, two hundred twelve thousand, two hundred twenty-one".