21010002222200 has 24 divisors (see below), whose sum is σ = 48848255167080. Its totient is φ = 8404000888800.

The previous prime is 21010002222191. The next prime is 21010002222241. The reversal of 21010002222200 is 222220001012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52525005356 + ... + 52525005755.

It is an arithmetic number, because the mean of its divisors is an integer number (2035343965295).

Almost surely, 2^{21010002222200} is an apocalyptic number.

21010002222200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21010002222200 is an abundant number, since it is smaller than the sum of its proper divisors (27838252944880).

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

21010002222200 is a wasteful number, since it uses less digits than its factorization.

21010002222200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105050011127 (or 105050011118 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21010002222200 its reverse (222220001012), we get a palindrome (21232222223212).

The spelling of 21010002222200 in words is "twenty-one trillion, ten billion, two million, two hundred twenty-two thousand, two hundred".