121123211201 has 4 divisors (see below), whose sum is σ = 121218062292. Its totient is φ = 121028360112.

The previous prime is 121123211161. The next prime is 121123211213. The reversal of 121123211201 is 102112321121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102112321121 = 16231 ⋅6291191.

It can be written as a sum of positive squares in 2 ways, for example, as 72821721025 + 48301490176 = 269855^2 + 219776^2 .

It is a cyclic number.

It is not a de Polignac number, because 121123211201 - 2¹⁴ = 121123194817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121123211201.

It is not an unprimeable number, because it can be changed into a prime (121123211801) 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, 47423630 + ... + 47426183.

It is an arithmetic number, because the mean of its divisors is an integer number (30304515573).

Almost surely, 2^121123211201 is an apocalyptic number.

It is an amenable number.

121123211201 is a deficient number, since it is larger than the sum of its proper divisors (94851091).

121123211201 is an equidigital number, since it uses as much as digits as its factorization.

121123211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94851090.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121123211201 its reverse (102112321121), we get a palindrome (223235532322).

It can be divided in two parts, 12112321120 and 1, that added together give a palindrome (12112321121).

The spelling of 121123211201 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred eleven thousand, two hundred one".