1001021222201 has 128 divisors (see below), whose sum is σ = 1416609976320. Its totient is φ = 682330521600.

The previous prime is 1001021222183. The next prime is 1001021222221. The reversal of 1001021222201 is 1022221201001.

It is not a de Polignac number, because 1001021222201 - 2²⁶ = 1000954113337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001021222221) 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 127 ways as a sum of consecutive naturals, for example, 340597790 + ... + 340600728.

It is an arithmetic number, because the mean of its divisors is an integer number (11067265440).

Almost surely, 2^{1001021222201} is an apocalyptic number.

1001021222201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1001021222201 is a deficient number, since it is larger than the sum of its proper divisors (415588754119).

1001021222201 is a wasteful number, since it uses less digits than its factorization.

1001021222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1001021222201 its reverse (1022221201001), we get a palindrome (2023242423202).

The spelling of 1001021222201 in words is "one trillion, one billion, twenty-one million, two hundred twenty-two thousand, two hundred one".