121211020011011 has 24 divisors (see below), whose sum is σ = 145550315583360. Its totient is φ = 100542780576000.

The previous prime is 121211020010947. The next prime is 121211020011041. The reversal of 121211020011011 is 110110020112121.

It is not a de Polignac number, because 121211020011011 - 2⁶ = 121211020010947 is a prime.

It is a super-2 number, since 2×121211020011011² (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 (121211020011041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202032785 + ... + 202631853.

It is an arithmetic number, because the mean of its divisors is an integer number (6064596482640).

Almost surely, 2^{121211020011011} is an apocalyptic number.

121211020011011 is a deficient number, since it is larger than the sum of its proper divisors (24339295572349).

121211020011011 is a wasteful number, since it uses less digits than its factorization.

121211020011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732315 (or 732308 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121211020011011 its reverse (110110020112121), we get a palindrome (231321040123132).

The spelling of 121211020011011 in words is "one hundred twenty-one trillion, two hundred eleven billion, twenty million, eleven thousand, eleven".