122021213011 has 4 divisors (see below), whose sum is σ = 122265745000. Its totient is φ = 121776681024.

The previous prime is 122021212949. The next prime is 122021213023. The reversal of 122021213011 is 110312120221.

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 122021213011 - 2²³ = 122012824403 is a prime.

It is a super-2 number, since 2×122021213011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122021213311) 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, 122265246 + ... + 122266243.

It is an arithmetic number, because the mean of its divisors is an integer number (30566436250).

Almost surely, 2^122021213011 is an apocalyptic number.

122021213011 is a deficient number, since it is larger than the sum of its proper divisors (244531989).

122021213011 is an equidigital number, since it uses as much as digits as its factorization.

122021213011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244531988.

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

Adding to 122021213011 its reverse (110312120221), we get a palindrome (232333333232).

The spelling of 122021213011 in words is "one hundred twenty-two billion, twenty-one million, two hundred thirteen thousand, eleven".