121021021020122 has 16 divisors (see below), whose sum is σ = 189654369943680. Its totient is φ = 57809291125872.

The previous prime is 121021021020121. The next prime is 121021021020127. The reversal of 121021021020122 is 221020120120121.

It is a self number, because there is not a number n which added to its sum of digits gives 121021021020122.

It is not an unprimeable number, because it can be changed into a prime (121021021020121) 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, 1598316797 + ... + 1598392512.

It is an arithmetic number, because the mean of its divisors is an integer number (11853398121480).

Almost surely, 2^{121021021020122} is an apocalyptic number.

121021021020122 is a deficient number, since it is larger than the sum of its proper divisors (68633348923558).

121021021020122 is a wasteful number, since it uses less digits than its factorization.

121021021020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196710157.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121021021020122 its reverse (221020120120121), we get a palindrome (342041141140243).

Subtracting 121021021020122 from its reverse (221020120120121), we obtain a palindrome (99999099099999).

The spelling of 121021021020122 in words is "one hundred twenty-one trillion, twenty-one billion, twenty-one million, twenty thousand, one hundred twenty-two".