121223011201 has 4 divisors (see below), whose sum is σ = 121231265092. Its totient is φ = 121214757312.

The previous prime is 121223011193. The next prime is 121223011241. The reversal of 121223011201 is 102110322121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102110322121 = 71 ⋅1438173551.

It can be written as a sum of positive squares in 2 ways, for example, as 44236184976 + 76986826225 = 210324^2 + 277465^2 .

It is a cyclic number.

It is not a de Polignac number, because 121223011201 - 2³ = 121223011193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121223011241) 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, 4104876 + ... + 4134301.

It is an arithmetic number, because the mean of its divisors is an integer number (30307816273).

Almost surely, 2^121223011201 is an apocalyptic number.

It is an amenable number.

121223011201 is a deficient number, since it is larger than the sum of its proper divisors (8253891).

121223011201 is an equidigital number, since it uses as much as digits as its factorization.

121223011201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8253890.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121223011201 its reverse (102110322121), we get a palindrome (223333333322).

The spelling of 121223011201 in words is "one hundred twenty-one billion, two hundred twenty-three million, eleven thousand, two hundred one".