122021221221211 has 16 divisors (see below), whose sum is σ = 133370479538464. Its totient is φ = 110952435965184.

The previous prime is 122021221221203. The next prime is 122021221221299. The reversal of 122021221221211 is 112122122120221.

It is a cyclic number.

It is not a de Polignac number, because 122021221221211 - 2³ = 122021221221203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122021221221311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70543975 + ... + 72252991.

It is an arithmetic number, because the mean of its divisors is an integer number (8335654971154).

Almost surely, 2^{122021221221211} is an apocalyptic number.

122021221221211 is a deficient number, since it is larger than the sum of its proper divisors (11349258317253).

122021221221211 is a wasteful number, since it uses less digits than its factorization.

122021221221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791070.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 122021221221211 its reverse (112122122120221), we get a palindrome (234143343341432).

The spelling of 122021221221211 in words is "one hundred twenty-two trillion, twenty-one billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred eleven".