1012220121201 has 96 divisors (see below), whose sum is σ = 1487585233920. Its totient is φ = 610489706112.

The previous prime is 1012220121191. The next prime is 1012220121259. The reversal of 1012220121201 is 1021210222101.

It is not a de Polignac number, because 1012220121201 - 2⁵ = 1012220121169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1012220121001) 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 95 ways as a sum of consecutive naturals, for example, 1178369910 + ... + 1178370768.

It is an arithmetic number, because the mean of its divisors is an integer number (15495679520).

Almost surely, 2^{1012220121201} is an apocalyptic number.

It is an amenable number.

1012220121201 is a deficient number, since it is larger than the sum of its proper divisors (475365112719).

1012220121201 is an equidigital number, since it uses as much as digits as its factorization.

1012220121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155 (or 1072 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1012220121201 its reverse (1021210222101), we get a palindrome (2033430343302).

The spelling of 1012220121201 in words is "one trillion, twelve billion, two hundred twenty million, one hundred twenty-one thousand, two hundred one".