6621131020011 has 16 divisors (see below), whose sum is σ = 9221260488960. Its totient is φ = 4220499981600.

The previous prime is 6621131019983. The next prime is 6621131020061. The reversal of 6621131020011 is 1100201311266.

It is a happy number.

It is not a de Polignac number, because 6621131020011 - 2¹⁹ = 6621130495723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6621131020061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369432565 + ... + 369450486.

It is an arithmetic number, because the mean of its divisors is an integer number (576328780560).

Almost surely, 2^{6621131020011} is an apocalyptic number.

6621131020011 is a deficient number, since it is larger than the sum of its proper divisors (2600129468949).

6621131020011 is a wasteful number, since it uses less digits than its factorization.

6621131020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738883186.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 6621131020011 its reverse (1100201311266), we get a palindrome (7721332331277).

The spelling of 6621131020011 in words is "six trillion, six hundred twenty-one billion, one hundred thirty-one million, twenty thousand, eleven".