11222002120021 has 128 divisors (see below), whose sum is σ = 14951773670400. Its totient is φ = 8341524172800.

The previous prime is 11222002120003. The next prime is 11222002120057. The reversal of 11222002120021 is 12002120022211.

It is a happy number.

It is not a de Polignac number, because 11222002120021 - 2¹³ = 11222002111829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11222002119977 and 11222002120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222002120061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2566199991 + ... + 2566204363.

It is an arithmetic number, because the mean of its divisors is an integer number (116810731800).

Almost surely, 2^{11222002120021} is an apocalyptic number.

11222002120021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11222002120021 is a deficient number, since it is larger than the sum of its proper divisors (3729771550379).

11222002120021 is a wasteful number, since it uses less digits than its factorization.

11222002120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812 (or 4798 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11222002120021 its reverse (12002120022211), we get a palindrome (23224122142232).

The spelling of 11222002120021 in words is "eleven trillion, two hundred twenty-two billion, two million, one hundred twenty thousand, twenty-one".