1220211106901 has 4 divisors (see below), whose sum is σ = 1220363469900. Its totient is φ = 1220058743904.

The previous prime is 1220211106853. The next prime is 1220211106927. The reversal of 1220211106901 is 1096011120221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 971898250801 + 248312856100 = 985849^2 + 498310^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220211106901 - 2³⁰ = 1219137365077 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 (1222211106901) 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, 76169486 + ... + 76185503.

It is an arithmetic number, because the mean of its divisors is an integer number (305090867475).

Almost surely, 2^{1220211106901} is an apocalyptic number.

It is an amenable number.

1220211106901 is a deficient number, since it is larger than the sum of its proper divisors (152362999).

1220211106901 is an equidigital number, since it uses as much as digits as its factorization.

1220211106901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152362998.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 1220211106901 in words is "one trillion, two hundred twenty billion, two hundred eleven million, one hundred six thousand, nine hundred one".