1011221570651 has 16 divisors (see below), whose sum is σ = 1131979831200. Its totient is φ = 897709091328.

The previous prime is 1011221570629. The next prime is 1011221570687. The reversal of 1011221570651 is 1560751221101.

It is not a de Polignac number, because 1011221570651 - 2²² = 1011217376347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011221570351) 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 15 ways as a sum of consecutive naturals, for example, 6761660 + ... + 6909593.

It is an arithmetic number, because the mean of its divisors is an integer number (70748739450).

Almost surely, 2^{1011221570651} is an apocalyptic number.

1011221570651 is a deficient number, since it is larger than the sum of its proper divisors (120758260549).

1011221570651 is a wasteful number, since it uses less digits than its factorization.

1011221570651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13671518.

The product of its (nonzero) digits is 4200, while the sum is 32.

Adding to 1011221570651 its reverse (1560751221101), we get a palindrome (2571972791752).

The spelling of 1011221570651 in words is "one trillion, eleven billion, two hundred twenty-one million, five hundred seventy thousand, six hundred fifty-one".