11002121220020 has 96 divisors (see below), whose sum is σ = 27795922667520. Its totient is φ = 3573481173120.

The previous prime is 11002121220017. The next prime is 11002121220023. The reversal of 11002121220020 is 2002212120011.

It is an interprime number because it is at equal distance from previous prime (11002121220017) and next prime (11002121220023).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 11002121219977 and 11002121220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002121220023) 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, 84222155 + ... + 84352685.

It is an arithmetic number, because the mean of its divisors is an integer number (289540861120).

Almost surely, 2^{11002121220020} is an apocalyptic number.

11002121220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11002121220020 is an abundant number, since it is smaller than the sum of its proper divisors (16793801447500).

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

11002121220020 is a wasteful number, since it uses less digits than its factorization.

11002121220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162253 (or 162251 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11002121220020 its reverse (2002212120011), we get a palindrome (13004333340031).

It can be divided in two parts, 1100212 and 1220020, that added together give a palindrome (2320232).

The spelling of 11002121220020 in words is "eleven trillion, two billion, one hundred twenty-one million, two hundred twenty thousand, twenty".