1022002721201 has 20 divisors (see below), whose sum is σ = 1284795572160. Its totient is φ = 796365676920.

The previous prime is 1022002721171. The next prime is 1022002721209. The reversal of 1022002721201 is 1021272002201.

It is not a de Polignac number, because 1022002721201 - 2²² = 1021998526897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022002721209) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4883525 + ... + 5088498.

It is an arithmetic number, because the mean of its divisors is an integer number (64239778608).

Almost surely, 2^{1022002721201} is an apocalyptic number.

1022002721201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1022002721201 is a deficient number, since it is larger than the sum of its proper divisors (262792850959).

1022002721201 is an frugal number, since it uses more digits than its factorization.

1022002721201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9972074 (or 9972041 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 1022002721201 its reverse (1021272002201), we get a palindrome (2043274723402).

The spelling of 1022002721201 in words is "one trillion, twenty-two billion, two million, seven hundred twenty-one thousand, two hundred one".