121222110101 has 4 divisors (see below), whose sum is σ = 121965804192. Its totient is φ = 120478416012.

The previous prime is 121222110067. The next prime is 121222110143. The reversal of 121222110101 is 101011222121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 101011222121 = 35111 ⋅2876911.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121222110101 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 (121222110701) 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, 371846801 + ... + 371847126.

It is an arithmetic number, because the mean of its divisors is an integer number (30491451048).

Almost surely, 2^121222110101 is an apocalyptic number.

It is an amenable number.

121222110101 is a deficient number, since it is larger than the sum of its proper divisors (743694091).

121222110101 is an equidigital number, since it uses as much as digits as its factorization.

121222110101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743694090.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121222110101 its reverse (101011222121), we get a palindrome (222233332222).

The spelling of 121222110101 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred ten thousand, one hundred one".