121121220111011 has 8 divisors (see below), whose sum is σ = 121618127009280. Its totient is φ = 120624588743112.

The previous prime is 121121220110923. The next prime is 121121220111041. The reversal of 121121220111011 is 110111022121121.

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

It is a cyclic number.

It is not a de Polignac number, because 121121220111011 - 2²² = 121121215916707 is a prime.

It is a super-2 number, since 2×121121220111011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121121220111041) 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, 68001581 + ... + 69759998.

It is an arithmetic number, because the mean of its divisors is an integer number (15202265876160).

Almost surely, 2^{121121220111011} is an apocalyptic number.

121121220111011 is a deficient number, since it is larger than the sum of its proper divisors (496906898269).

121121220111011 is a wasteful number, since it uses less digits than its factorization.

121121220111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137765185.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121121220111011 its reverse (110111022121121), we get a palindrome (231232242232132).

The spelling of 121121220111011 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred twenty million, one hundred eleven thousand, eleven".