121221021221122 has 32 divisors (see below), whose sum is σ = 188225027112960. Its totient is φ = 58490353650960.

The previous prime is 121221021221117. The next prime is 121221021221123. The reversal of 121221021221122 is 221122120122121.

It is a junction number, because it is equal to n+sod(n) for n = 121221021221093 and 121221021221102.

It is not an unprimeable number, because it can be changed into a prime (121221021221123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1479292483 + ... + 1479374425.

It is an arithmetic number, because the mean of its divisors is an integer number (5882032097280).

Almost surely, 2^{121221021221122} is an apocalyptic number.

121221021221122 is a deficient number, since it is larger than the sum of its proper divisors (67004005891838).

121221021221122 is a wasteful number, since it uses less digits than its factorization.

121221021221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148798.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 121221021221122 its reverse (221122120122121), we get a palindrome (342343141343243).

The spelling of 121221021221122 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty-one million, two hundred twenty-one thousand, one hundred twenty-two".