10021211012091 has 16 divisors (see below), whose sum is σ = 13541122749440. Its totient is φ = 6591531997440.

The previous prime is 10021211012069. The next prime is 10021211012107. The reversal of 10021211012091 is 19021011212001.

It is not a de Polignac number, because 10021211012091 - 2⁶ = 10021211012027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10021211012011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59752246 + ... + 59919723.

It is an arithmetic number, because the mean of its divisors is an integer number (846320171840).

Almost surely, 2^{10021211012091} is an apocalyptic number.

10021211012091 is a deficient number, since it is larger than the sum of its proper divisors (3519911737349).

10021211012091 is a wasteful number, since it uses less digits than its factorization.

10021211012091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119672346.

The product of its (nonzero) digits is 72, while the sum is 21.

Adding to 10021211012091 its reverse (19021011212001), we get a palindrome (29042222224092).

The spelling of 10021211012091 in words is "ten trillion, twenty-one billion, two hundred eleven million, twelve thousand, ninety-one".