121021002122 has 4 divisors (see below), whose sum is σ = 181531503186. Its totient is φ = 60510501060.

The previous prime is 121021002103. The next prime is 121021002127. The reversal of 121021002122 is 221200120121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 84425694721 + 36595307401 = 290561^2 + 191299^2 .

It is a super-2 number, since 2×121021002122² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121021002097 and 121021002106.

It is not an unprimeable number, because it can be changed into a prime (121021002127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30255250529 + ... + 30255250532.

Almost surely, 2^121021002122 is an apocalyptic number.

121021002122 is a deficient number, since it is larger than the sum of its proper divisors (60510501064).

121021002122 is an equidigital number, since it uses as much as digits as its factorization.

121021002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60510501063.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121021002122 its reverse (221200120121), we get a palindrome (342221122243).

The spelling of 121021002122 in words is "one hundred twenty-one billion, twenty-one million, two thousand, one hundred twenty-two".