121122120011 has 4 divisors (see below), whose sum is σ = 122321349024. Its totient is φ = 119922891000.

The previous prime is 121122119939. The next prime is 121122120029. The reversal of 121122120011 is 110021221121.

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 121122120011 - 2¹⁸ = 121121857867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121122120311) 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, 599614355 + ... + 599614556.

It is an arithmetic number, because the mean of its divisors is an integer number (30580337256).

Almost surely, 2^121122120011 is an apocalyptic number.

121122120011 is a deficient number, since it is larger than the sum of its proper divisors (1199229013).

121122120011 is a wasteful number, since it uses less digits than its factorization.

121122120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199229012.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121122120011 its reverse (110021221121), we get a palindrome (231143341132).

The spelling of 121122120011 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred twenty thousand, eleven".