11221001210020 has 96 divisors (see below), whose sum is σ = 27024256143360. Its totient is φ = 3833807794560.

The previous prime is 11221001210017. The next prime is 11221001210057. The reversal of 11221001210020 is 2001210012211.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 72649075 + ... + 72803365.

It is an arithmetic number, because the mean of its divisors is an integer number (281502668160).

Almost surely, 2^{11221001210020} is an apocalyptic number.

11221001210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221001210020 is an abundant number, since it is smaller than the sum of its proper divisors (15803254933340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11221001210020 is a wasteful number, since it uses less digits than its factorization.

11221001210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156113 (or 156111 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11221001210020 its reverse (2001210012211), we get a palindrome (13222211222231).

The spelling of 11221001210020 in words is "eleven trillion, two hundred twenty-one billion, one million, two hundred ten thousand, twenty".