121010221011 has 16 divisors (see below), whose sum is σ = 168387851520. Its totient is φ = 77154110880.

The previous prime is 121010220997. The next prime is 121010221061. The reversal of 121010221011 is 110122010121.

It is not a de Polignac number, because 121010221011 - 2¹⁹ = 121009696723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121010221061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330625 + ... + 592733.

It is an arithmetic number, because the mean of its divisors is an integer number (10524240720).

Almost surely, 2^121010221011 is an apocalyptic number.

121010221011 is a deficient number, since it is larger than the sum of its proper divisors (47377630509).

121010221011 is a wasteful number, since it uses less digits than its factorization.

121010221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268826.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121010221011 its reverse (110122010121), we get a palindrome (231132231132).

The spelling of 121010221011 in words is "one hundred twenty-one billion, ten million, two hundred twenty-one thousand, eleven".