1000021212201 has 64 divisors (see below), whose sum is σ = 1547849318400. Its totient is φ = 567913420800.

The previous prime is 1000021212199. The next prime is 1000021212241. The reversal of 1000021212201 is 1022121200001.

It is not a de Polignac number, because 1000021212201 - 2¹ = 1000021212199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000021212241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 128385015 + ... + 128392803.

It is an arithmetic number, because the mean of its divisors is an integer number (24185145600).

Almost surely, 2^{1000021212201} is an apocalyptic number.

1000021212201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000021212201 is a deficient number, since it is larger than the sum of its proper divisors (547828106199).

1000021212201 is a wasteful number, since it uses less digits than its factorization.

1000021212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10030.

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

Adding to 1000021212201 its reverse (1022121200001), we get a palindrome (2022142412202).

The spelling of 1000021212201 in words is "one trillion, twenty-one million, two hundred twelve thousand, two hundred one".