121011133211 has 4 divisors (see below), whose sum is σ = 121042707912. Its totient is φ = 120979558512.

The previous prime is 121011133189. The next prime is 121011133249. The reversal of 121011133211 is 112331110121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112331110121 = 1847 ⋅60818143.

It is a cyclic number.

It is not a de Polignac number, because 121011133211 - 2¹⁴ = 121011116827 is a prime.

It is a super-2 number, since 2×121011133211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121011133211.

It is not an unprimeable number, because it can be changed into a prime (121011133291) 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, 15781601 + ... + 15789266.

It is an arithmetic number, because the mean of its divisors is an integer number (30260676978).

Almost surely, 2^121011133211 is an apocalyptic number.

121011133211 is a deficient number, since it is larger than the sum of its proper divisors (31574701).

121011133211 is an equidigital number, since it uses as much as digits as its factorization.

121011133211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31574700.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 121011133211 its reverse (112331110121), we get a palindrome (233342243332).

The spelling of 121011133211 in words is "one hundred twenty-one billion, eleven million, one hundred thirty-three thousand, two hundred eleven".