122131121011 has 4 divisors (see below), whose sum is σ = 126070834624. Its totient is φ = 118191407400.

The previous prime is 122131121009. The next prime is 122131121029. The reversal of 122131121011 is 110121131221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 122131121011 - 2¹ = 122131121009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122131121111) 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, 1969856760 + ... + 1969856821.

It is an arithmetic number, because the mean of its divisors is an integer number (31517708656).

Almost surely, 2^122131121011 is an apocalyptic number.

122131121011 is a deficient number, since it is larger than the sum of its proper divisors (3939713613).

122131121011 is an equidigital number, since it uses as much as digits as its factorization.

122131121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939713612.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 122131121011 its reverse (110121131221), we get a palindrome (232252252232).

The spelling of 122131121011 in words is "one hundred twenty-two billion, one hundred thirty-one million, one hundred twenty-one thousand, eleven".