21100121100202 has 32 divisors (see below), whose sum is σ = 33149787840000. Its totient is φ = 10053626394240.

The previous prime is 21100121100187. The next prime is 21100121100209. The reversal of 21100121100202 is 20200112100112.

It is a super-2 number, since 2×21100121100202² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21100121100209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420689958 + ... + 420740110.

It is an arithmetic number, because the mean of its divisors is an integer number (1035930870000).

Almost surely, 2^{21100121100202} is an apocalyptic number.

21100121100202 is a deficient number, since it is larger than the sum of its proper divisors (12049666739798).

21100121100202 is a wasteful number, since it uses less digits than its factorization.

21100121100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84198.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21100121100202 its reverse (20200112100112), we get a palindrome (41300233200314).

The spelling of 21100121100202 in words is "twenty-one trillion, one hundred billion, one hundred twenty-one million, one hundred thousand, two hundred two".