1220011121201 has 4 divisors (see below), whose sum is σ = 1231855889472. Its totient is φ = 1208166352932.

The previous prime is 1220011121113. The next prime is 1220011121233. The reversal of 1220011121201 is 1021211100221.

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 1220011121201 - 2²⁶ = 1219944012337 is a prime.

It is a super-2 number, since 2×1220011121201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220011121801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5922383981 + ... + 5922384186.

It is an arithmetic number, because the mean of its divisors is an integer number (307963972368).

Almost surely, 2^{1220011121201} is an apocalyptic number.

It is an amenable number.

1220011121201 is a deficient number, since it is larger than the sum of its proper divisors (11844768271).

1220011121201 is a wasteful number, since it uses less digits than its factorization.

1220011121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11844768270.

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

Adding to 1220011121201 its reverse (1021211100221), we get a palindrome (2241222221422).

The spelling of 1220011121201 in words is "one trillion, two hundred twenty billion, eleven million, one hundred twenty-one thousand, two hundred one".