1220100010121 has 4 divisors (see below), whose sum is σ = 1273147836672. Its totient is φ = 1167052183572.

The previous prime is 1220100010117. The next prime is 1220100010139. The reversal of 1220100010121 is 1210100010221.

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 1220100010121 - 2² = 1220100010117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220100010111) 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, 26523913241 + ... + 26523913286.

It is an arithmetic number, because the mean of its divisors is an integer number (318286959168).

Almost surely, 2^{1220100010121} is an apocalyptic number.

It is an amenable number.

1220100010121 is a deficient number, since it is larger than the sum of its proper divisors (53047826551).

1220100010121 is an equidigital number, since it uses as much as digits as its factorization.

1220100010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53047826550.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1220100010121 its reverse (1210100010221), we get a palindrome (2430200020342).

The spelling of 1220100010121 in words is "one trillion, two hundred twenty billion, one hundred million, ten thousand, one hundred twenty-one".