121240223311 has 8 divisors (see below), whose sum is σ = 129453667200. Its totient is φ = 113271956952.

The previous prime is 121240223303. The next prime is 121240223323. The reversal of 121240223311 is 113322042121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121240223311 - 2³ = 121240223303 is a prime.

It is a super-2 number, since 2×121240223311² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121240223371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61293361 + ... + 61295338.

It is an arithmetic number, because the mean of its divisors is an integer number (16181708400).

Almost surely, 2^121240223311 is an apocalyptic number.

121240223311 is a deficient number, since it is larger than the sum of its proper divisors (8213443889).

121240223311 is a wasteful number, since it uses less digits than its factorization.

121240223311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122588765.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 121240223311 its reverse (113322042121), we get a palindrome (234562265432).

The spelling of 121240223311 in words is "one hundred twenty-one billion, two hundred forty million, two hundred twenty-three thousand, three hundred eleven".