1012221101201 has 4 divisors (see below), whose sum is σ = 1022243092404. Its totient is φ = 1002199110000.

The previous prime is 1012221101191. The next prime is 1012221101267. The reversal of 1012221101201 is 1021011222101.

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 555920851201 + 456300250000 = 745601^2 + 675500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012221101201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012221161201) 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, 5010995450 + ... + 5010995651.

It is an arithmetic number, because the mean of its divisors is an integer number (255560773101).

Almost surely, 2^{1012221101201} is an apocalyptic number.

It is an amenable number.

1012221101201 is a deficient number, since it is larger than the sum of its proper divisors (10021991203).

1012221101201 is a wasteful number, since it uses less digits than its factorization.

1012221101201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10021991202.

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

Adding to 1012221101201 its reverse (1021011222101), we get a palindrome (2033232323302).

The spelling of 1012221101201 in words is "one trillion, twelve billion, two hundred twenty-one million, one hundred one thousand, two hundred one".