121100212333321 has 4 divisors (see below), whose sum is σ = 130415613282052. Its totient is φ = 111784811384592.

The previous prime is 121100212333283. The next prime is 121100212333361. The reversal of 121100212333321 is 123333212001121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8434958490000 + 112665253843321 = 2904300^2 + 10614389^2 .

It is a cyclic number.

It is not a de Polignac number, because 121100212333321 - 2¹³ = 121100212325129 is a prime.

It is a super-2 number, since 2×121100212333321² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121100212333361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4657700474346 + ... + 4657700474371.

It is an arithmetic number, because the mean of its divisors is an integer number (32603903320513).

Almost surely, 2^{121100212333321} is an apocalyptic number.

It is an amenable number.

121100212333321 is a deficient number, since it is larger than the sum of its proper divisors (9315400948731).

121100212333321 is an equidigital number, since it uses as much as digits as its factorization.

121100212333321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9315400948730.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 121100212333321 its reverse (123333212001121), we get a palindrome (244433424334442).

The spelling of 121100212333321 in words is "one hundred twenty-one trillion, one hundred billion, two hundred twelve million, three hundred thirty-three thousand, three hundred twenty-one".