21200011222002 has 16 divisors (see below), whose sum is σ = 43767765103872. Its totient is φ = 6838713297360.

The previous prime is 21200011222001. The next prime is 21200011222079. The reversal of 21200011222002 is 20022211000212.

It is not an unprimeable number, because it can be changed into a prime (21200011222001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56989277293 + ... + 56989277664.

It is an arithmetic number, because the mean of its divisors is an integer number (2735485318992).

Almost surely, 2^{21200011222002} is an apocalyptic number.

21200011222002 is an abundant number, since it is smaller than the sum of its proper divisors (22567753881870).

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

21200011222002 is a wasteful number, since it uses less digits than its factorization.

21200011222002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113978554993.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21200011222002 its reverse (20022211000212), we get a palindrome (41222222222214).

The spelling of 21200011222002 in words is "twenty-one trillion, two hundred billion, eleven million, two hundred twenty-two thousand, two".