121021121102211 has 36 divisors (see below), whose sum is σ = 194365949994216. Its totient is φ = 71962244515200.

The previous prime is 121021121102209. The next prime is 121021121102221. The reversal of 121021121102211 is 112201121120121.

It is a happy number.

121021121102211 is a `hidden beast` number, since 1 + 21 + 0 + 211 + 211 + 0 + 221 + 1 = 666.

It is not a de Polignac number, because 121021121102211 - 2¹ = 121021121102209 is a prime.

It is a super-2 number, since 2×121021121102211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121021121102221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 217314570 + ... + 217870751.

It is an arithmetic number, because the mean of its divisors is an integer number (5399054166506).

Almost surely, 2^{121021121102211} is an apocalyptic number.

121021121102211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121021121102211 is a deficient number, since it is larger than the sum of its proper divisors (73344828892005).

121021121102211 is a wasteful number, since it uses less digits than its factorization.

121021121102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435185444 (or 435185388 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121021121102211 its reverse (112201121120121), we get a palindrome (233222242222332).

The spelling of 121021121102211 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred twenty-one million, one hundred two thousand, two hundred eleven".