122132121221 has 8 divisors (see below), whose sum is σ = 139027869504. Its totient is φ = 106201844320.

The previous prime is 122132121211. The next prime is 122132121229. The reversal of 122132121221 is 122121231221.

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

It is not a de Polignac number, because 122132121221 - 2³⁴ = 104952252037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122132121193 and 122132121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122132121229) 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, 241367576 + ... + 241368081.

It is an arithmetic number, because the mean of its divisors is an integer number (17378483688).

Almost surely, 2^122132121221 is an apocalyptic number.

122132121221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122132121221 is a deficient number, since it is larger than the sum of its proper divisors (16895748283).

122132121221 is a wasteful number, since it uses less digits than its factorization.

122132121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482735691.

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

Adding to 122132121221 its reverse (122121231221), we get a palindrome (244253352442).

Subtracting from 122132121221 its reverse (122121231221), we obtain a square (10890000 = 3300²).

The spelling of 122132121221 in words is "one hundred twenty-two billion, one hundred thirty-two million, one hundred twenty-one thousand, two hundred twenty-one".