121022121211 has 8 divisors (see below), whose sum is σ = 126301986720. Its totient is φ = 115743758592.

The previous prime is 121022121193. The next prime is 121022121223. The reversal of 121022121211 is 112121220121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121022121211 - 2²⁵ = 120988566779 is a prime.

It is a super-2 number, since 2×121022121211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121022121271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209590 + ... + 534763.

It is an arithmetic number, because the mean of its divisors is an integer number (15787748340).

Almost surely, 2^121022121211 is an apocalyptic number.

121022121211 is a deficient number, since it is larger than the sum of its proper divisors (5279865509).

121022121211 is an equidigital number, since it uses as much as digits as its factorization.

121022121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751445.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121022121211 its reverse (112121220121), we get a palindrome (233143341332).

The spelling of 121022121211 in words is "one hundred twenty-one billion, twenty-two million, one hundred twenty-one thousand, two hundred eleven".