121122212311 has 4 divisors (see below), whose sum is σ = 121123278072. Its totient is φ = 121121146552.

The previous prime is 121122212303. The next prime is 121122212353. The reversal of 121122212311 is 113212221121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 121122212311 - 2³ = 121122212303 is a prime.

It is a super-2 number, since 2×121122212311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102212311) 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, 338860 + ... + 597553.

It is an arithmetic number, because the mean of its divisors is an integer number (30280819518).

Almost surely, 2^121122212311 is an apocalyptic number.

121122212311 is a deficient number, since it is larger than the sum of its proper divisors (1065761).

121122212311 is an equidigital number, since it uses as much as digits as its factorization.

121122212311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065760.

The product of its digits is 96, while the sum is 19.

Adding to 121122212311 its reverse (113212221121), we get a palindrome (234334433432).

The spelling of 121122212311 in words is "one hundred twenty-one billion, one hundred twenty-two million, two hundred twelve thousand, three hundred eleven".