122121211011 has 8 divisors (see below), whose sum is σ = 162883358544. Its totient is φ = 81386602080.

The previous prime is 122121210997. The next prime is 122121211019. The reversal of 122121211011 is 110112121221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122121211011 - 2⁵ = 122121210979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122121211019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6874300 + ... + 6892041.

It is an arithmetic number, because the mean of its divisors is an integer number (20360419818).

Almost surely, 2^122121211011 is an apocalyptic number.

122121211011 is a deficient number, since it is larger than the sum of its proper divisors (40762147533).

122121211011 is a wasteful number, since it uses less digits than its factorization.

122121211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13769301.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 122121211011 its reverse (110112121221), we get a palindrome (232233332232).

The spelling of 122121211011 in words is "one hundred twenty-two billion, one hundred twenty-one million, two hundred eleven thousand, eleven".