21100101202 has 8 divisors (see below), whose sum is σ = 31651012476. Its totient is φ = 10549763712.

The previous prime is 21100101199. The next prime is 21100101203. The reversal of 21100101202 is 20210100112.

It can be written as a sum of positive squares in 2 ways, for example, as 19959755841 + 1140345361 = 141279^2 + 33769^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21100101203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35163 + ... + 208414.

Almost surely, 2^21100101202 is an apocalyptic number.

21100101202 is a deficient number, since it is larger than the sum of its proper divisors (10550911274).

21100101202 is a wasteful number, since it uses less digits than its factorization.

21100101202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286892.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21100101202 its reverse (20210100112), we get a palindrome (41310201314).

The spelling of 21100101202 in words is "twenty-one billion, one hundred million, one hundred one thousand, two hundred two".