1220211022001 has 4 divisors (see below), whose sum is σ = 1259572667904. Its totient is φ = 1180849376100.

The previous prime is 1220211021971. The next prime is 1220211022039. The reversal of 1220211022001 is 1002201120221.

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 a de Polignac number, because none of the positive numbers 2^k-1220211022001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220211022501) 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, 19680822905 + ... + 19680822966.

It is an arithmetic number, because the mean of its divisors is an integer number (314893166976).

Almost surely, 2^{1220211022001} is an apocalyptic number.

It is an amenable number.

1220211022001 is a deficient number, since it is larger than the sum of its proper divisors (39361645903).

1220211022001 is an equidigital number, since it uses as much as digits as its factorization.

1220211022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39361645902.

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

Adding to 1220211022001 its reverse (1002201120221), we get a palindrome (2222412142222).

The spelling of 1220211022001 in words is "one trillion, two hundred twenty billion, two hundred eleven million, twenty-two thousand, one".