122201212121011 has 4 divisors (see below), whose sum is σ = 125043100775032. Its totient is φ = 119359323466992.

The previous prime is 122201212120993. The next prime is 122201212121039. The reversal of 122201212121011 is 110121212102221.

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 122201212121011 - 2¹⁵ = 122201212088243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122201212121011.

It is not an unprimeable number, because it can be changed into a prime (122201212121041) 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, 1420944326946 + ... + 1420944327031.

It is an arithmetic number, because the mean of its divisors is an integer number (31260775193758).

Almost surely, 2^{122201212121011} is an apocalyptic number.

122201212121011 is a deficient number, since it is larger than the sum of its proper divisors (2841888654021).

122201212121011 is an equidigital number, since it uses as much as digits as its factorization.

122201212121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841888654020.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 122201212121011 its reverse (110121212102221), we get a palindrome (232322424223232).

The spelling of 122201212121011 in words is "one hundred twenty-two trillion, two hundred one billion, two hundred twelve million, one hundred twenty-one thousand, eleven".