121010211101011 has 4 divisors (see below), whose sum is σ = 121066416496152. Its totient is φ = 120954005705872.

The previous prime is 121010211101009. The next prime is 121010211101069. The reversal of 121010211101011 is 110101112010121.

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 121010211101011 - 2¹ = 121010211101009 is a prime.

It is a super-2 number, since 2×121010211101011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121010211100982 and 121010211101000.

It is not an unprimeable number, because it can be changed into a prime (121010211101911) 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, 28102694341 + ... + 28102698646.

It is an arithmetic number, because the mean of its divisors is an integer number (30266604124038).

Almost surely, 2^{121010211101011} is an apocalyptic number.

121010211101011 is a deficient number, since it is larger than the sum of its proper divisors (56205395141).

121010211101011 is an equidigital number, since it uses as much as digits as its factorization.

121010211101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56205395140.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 121010211101011 its reverse (110101112010121), we get a palindrome (231111323111132).

The spelling of 121010211101011 in words is "one hundred twenty-one trillion, ten billion, two hundred eleven million, one hundred one thousand, eleven".