21002011110222 has 64 divisors (see below), whose sum is σ = 44080310489088. Its totient is φ = 6662189088000.

The previous prime is 21002011110211. The next prime is 21002011110299. The reversal of 21002011110222 is 22201111020012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47786178 + ... + 48223674.

It is an arithmetic number, because the mean of its divisors is an integer number (688754851392).

Almost surely, 2^{21002011110222} is an apocalyptic number.

21002011110222 is an abundant number, since it is smaller than the sum of its proper divisors (23078299378866).

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

21002011110222 is a wasteful number, since it uses less digits than its factorization.

21002011110222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441825.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21002011110222 its reverse (22201111020012), we get a palindrome (43203122130234).

The spelling of 21002011110222 in words is "twenty-one trillion, two billion, eleven million, one hundred ten thousand, two hundred twenty-two".