1020221001201 has 16 divisors (see below), whose sum is σ = 1397089643264. Its totient is φ = 661750642944.

The previous prime is 1020221001199. The next prime is 1020221001203. The reversal of 1020221001201 is 1021001220201.

It is an interprime number because it is at equal distance from previous prime (1020221001199) and next prime (1020221001203).

It is not a de Polignac number, because 1020221001201 - 2¹ = 1020221001199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020221001203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8019576 + ... + 8145798.

It is an arithmetic number, because the mean of its divisors is an integer number (87318102704).

Almost surely, 2^{1020221001201} is an apocalyptic number.

It is an amenable number.

1020221001201 is a deficient number, since it is larger than the sum of its proper divisors (376868642063).

1020221001201 is a wasteful number, since it uses less digits than its factorization.

1020221001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199080.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1020221001201 its reverse (1021001220201), we get a palindrome (2041222221402).

It can be divided in two parts, 10202 and 21001201, that added together give a triangular number (21011403 = T₆₄₈₂).

The spelling of 1020221001201 in words is "one trillion, twenty billion, two hundred twenty-one million, one thousand, two hundred one".