121122102101021 has 4 divisors (see below), whose sum is σ = 138425259544032. Its totient is φ = 103818944658012.

The previous prime is 121122102100999. The next prime is 121122102101053. The reversal of 121122102101021 is 120101201221121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121122102101021 - 2²² = 121122097906717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122102121021) 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, 8651578721495 + ... + 8651578721508.

It is an arithmetic number, because the mean of its divisors is an integer number (34606314886008).

Almost surely, 2^{121122102101021} is an apocalyptic number.

It is an amenable number.

121122102101021 is a deficient number, since it is larger than the sum of its proper divisors (17303157443011).

121122102101021 is an equidigital number, since it uses as much as digits as its factorization.

121122102101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17303157443010.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121122102101021 its reverse (120101201221121), we get a palindrome (241223303322142).

The spelling of 121122102101021 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, one hundred two million, one hundred one thousand, twenty-one".