122102211020121 has 6 divisors (see below), whose sum is σ = 176369860362410. Its totient is φ = 81401474013408.

The previous prime is 122102211020117. The next prime is 122102211020147. The reversal of 122102211020121 is 121020112201221.

122102211020121 is a `hidden beast` number, since 1 + 2 + 210 + 221 + 10 + 201 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 106627515123600 + 15474695896521 = 10326060^2 + 3933789^2 .

It is not a de Polignac number, because 122102211020121 - 2² = 122102211020117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122102211020094 and 122102211020103.

It is not an unprimeable number, because it can be changed into a prime (122102211020161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6783456167776 + ... + 6783456167793.

Almost surely, 2^{122102211020121} is an apocalyptic number.

It is an amenable number.

122102211020121 is a deficient number, since it is larger than the sum of its proper divisors (54267649342289).

122102211020121 is a wasteful number, since it uses less digits than its factorization.

122102211020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13566912335575 (or 13566912335572 counting only the distinct ones).

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

Adding to 122102211020121 its reverse (121020112201221), we get a palindrome (243122323221342).

The spelling of 122102211020121 in words is "one hundred twenty-two trillion, one hundred two billion, two hundred eleven million, twenty thousand, one hundred twenty-one".