1001012201211 has 32 divisors (see below), whose sum is σ = 1486737139968. Its totient is φ = 593995645440.

The previous prime is 1001012201117. The next prime is 1001012201213. The reversal of 1001012201211 is 1121022101001.

It is not a de Polignac number, because 1001012201211 - 2²⁹ = 1000475330299 is a prime.

It is a super-3 number, since 3×1001012201211³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1001012201213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1186501 + ... + 1846566.

It is an arithmetic number, because the mean of its divisors is an integer number (46460535624).

Almost surely, 2^{1001012201211} is an apocalyptic number.

1001012201211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1001012201211 is a deficient number, since it is larger than the sum of its proper divisors (485724938757).

1001012201211 is a wasteful number, since it uses less digits than its factorization.

1001012201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033291.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1001012201211 its reverse (1121022101001), we get a palindrome (2122034302212).

It can be divided in two parts, 10010 and 12201211, that added together give a palindrome (12211221).

The spelling of 1001012201211 in words is "one trillion, one billion, twelve million, two hundred one thousand, two hundred eleven".