122120212011 has 16 divisors (see below), whose sum is σ = 197034292224. Its totient is φ = 65678097024.

The previous prime is 122120212007. The next prime is 122120212013. The reversal of 122120212011 is 110212021221.

It is not a de Polignac number, because 122120212011 - 2² = 122120212007 is a prime.

It is a super-2 number, since 2×122120212011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122120212013) 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, 171036355 + ... + 171037068.

It is an arithmetic number, because the mean of its divisors is an integer number (12314643264).

Almost surely, 2^122120212011 is an apocalyptic number.

122120212011 is a deficient number, since it is larger than the sum of its proper divisors (74914080213).

122120212011 is a wasteful number, since it uses less digits than its factorization.

122120212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342073450.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122120212011 its reverse (110212021221), we get a palindrome (232332233232).

The spelling of 122120212011 in words is "one hundred twenty-two billion, one hundred twenty million, two hundred twelve thousand, eleven".