121010220011 has 4 divisors (see below), whose sum is σ = 121460072400. Its totient is φ = 120560367624.

The previous prime is 121010219989. The next prime is 121010220017. The reversal of 121010220011 is 110022010121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110022010121 = 83 ⋅1325566387.

It is a cyclic number.

It is not a de Polignac number, because 121010220011 - 2³⁰ = 119936478187 is a prime.

It is a super-2 number, since 2×121010220011² (a number of 23 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 = 121010219974 and 121010220001.

It is not an unprimeable number, because it can be changed into a prime (121010220017) 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, 224925791 + ... + 224926328.

It is an arithmetic number, because the mean of its divisors is an integer number (30365018100).

Almost surely, 2^121010220011 is an apocalyptic number.

121010220011 is a deficient number, since it is larger than the sum of its proper divisors (449852389).

121010220011 is an equidigital number, since it uses as much as digits as its factorization.

121010220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449852388.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121010220011 its reverse (110022010121), we get a palindrome (231032230132).

The spelling of 121010220011 in words is "one hundred twenty-one billion, ten million, two hundred twenty thousand, eleven".