1201220220101 has 4 divisors (see below), whose sum is σ = 1310422058304. Its totient is φ = 1092018381900.

The previous prime is 1201220220077. The next prime is 1201220220103. The reversal of 1201220220101 is 1010220221021.

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 1201220220101 - 2³⁰ = 1200146478277 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 (1201220220103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54600919085 + ... + 54600919106.

It is an arithmetic number, because the mean of its divisors is an integer number (327605514576).

Almost surely, 2^{1201220220101} is an apocalyptic number.

1201220220101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201220220101 is a deficient number, since it is larger than the sum of its proper divisors (109201838203).

1201220220101 is a wasteful number, since it uses less digits than its factorization.

1201220220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109201838202.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1201220220101 its reverse (1010220221021), we get a palindrome (2211440441122).

It can be divided in two parts, 120 and 1220220101, that added together give a palindrome (1220220221).

The spelling of 1201220220101 in words is "one trillion, two hundred one billion, two hundred twenty million, two hundred twenty thousand, one hundred one".