121132220101 has 4 divisors (see below), whose sum is σ = 125039711104. Its totient is φ = 117224729100.

The previous prime is 121132220081. The next prime is 121132220149. The reversal of 121132220101 is 101022231121.

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 121132220101 - 2¹⁹ = 121131695813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121132223101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1953745455 + ... + 1953745516.

It is an arithmetic number, because the mean of its divisors is an integer number (31259927776).

Almost surely, 2^121132220101 is an apocalyptic number.

It is an amenable number.

121132220101 is a deficient number, since it is larger than the sum of its proper divisors (3907491003).

121132220101 is an equidigital number, since it uses as much as digits as its factorization.

121132220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907491002.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121132220101 its reverse (101022231121), we get a palindrome (222154451222).

The spelling of 121132220101 in words is "one hundred twenty-one billion, one hundred thirty-two million, two hundred twenty thousand, one hundred one".