121001322213 has 12 divisors (see below), whose sum is σ = 177644929228. Its totient is φ = 79345128960.

The previous prime is 121001322209. The next prime is 121001322227. The reversal of 121001322213 is 312223100121.

It can be written as a sum of positive squares in 2 ways, for example, as 5318347329 + 115682974884 = 72927^2 + 340122^2 .

It is not a de Polignac number, because 121001322213 - 2² = 121001322209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001322913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110201020 + ... + 110202117.

Almost surely, 2^121001322213 is an apocalyptic number.

It is an amenable number.

121001322213 is a deficient number, since it is larger than the sum of its proper divisors (56643607015).

121001322213 is a wasteful number, since it uses less digits than its factorization.

121001322213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220403204 (or 220403201 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121001322213 its reverse (312223100121), we get a palindrome (433224422334).

The spelling of 121001322213 in words is "one hundred twenty-one billion, one million, three hundred twenty-two thousand, two hundred thirteen".