121222110121011 has 6 divisors (see below), whose sum is σ = 175098603508140. Its totient is φ = 80814740080668.

The previous prime is 121222110120949. The next prime is 121222110121031. The reversal of 121222110121011 is 110121011222121.

It is a happy number.

121222110121011 is a `hidden beast` number, since 1 + 212 + 221 + 10 + 1 + 210 + 11 = 666.

It is not a de Polignac number, because 121222110121011 - 2¹⁰ = 121222110119987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121222110121031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6734561673381 + ... + 6734561673398.

It is an arithmetic number, because the mean of its divisors is an integer number (29183100584690).

Almost surely, 2^{121222110121011} is an apocalyptic number.

121222110121011 is a deficient number, since it is larger than the sum of its proper divisors (53876493387129).

121222110121011 is a wasteful number, since it uses less digits than its factorization.

121222110121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13469123346785 (or 13469123346782 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121222110121011 its reverse (110121011222121), we get a palindrome (231343121343132).

It can be divided in two parts, 121222110 and 121011, that added together give a palindrome (121343121).

The spelling of 121222110121011 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred ten million, one hundred twenty-one thousand, eleven".