1220120222201 has 4 divisors (see below), whose sum is σ = 1220143920000. Its totient is φ = 1220096524404.

The previous prime is 1220120222197. The next prime is 1220120222249. The reversal of 1220120222201 is 1022220210221.

It is a happy number.

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 1220120222201 - 2² = 1220120222197 is a prime.

It is a super-2 number, since 2×1220120222201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220120222201.

It is not an unprimeable number, because it can be changed into a prime (1220120227201) 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, 11771501 + ... + 11874698.

It is an arithmetic number, because the mean of its divisors is an integer number (305035980000).

Almost surely, 2^{1220120222201} is an apocalyptic number.

It is an amenable number.

1220120222201 is a deficient number, since it is larger than the sum of its proper divisors (23697799).

1220120222201 is an equidigital number, since it uses as much as digits as its factorization.

1220120222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23697798.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1220120222201 its reverse (1022220210221), we get a palindrome (2242340432422).

The spelling of 1220120222201 in words is "one trillion, two hundred twenty billion, one hundred twenty million, two hundred twenty-two thousand, two hundred one".