21110002110202 has 4 divisors (see below), whose sum is σ = 31665003165306. Its totient is φ = 10555001055100.

The previous prime is 21110002110181. The next prime is 21110002110259. The reversal of 21110002110202 is 20201120001112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20907564205441 + 202437904761 = 4572479^2 + 449931^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5277500527549 + ... + 5277500527552.

Almost surely, 2^{21110002110202} is an apocalyptic number.

21110002110202 is a deficient number, since it is larger than the sum of its proper divisors (10555001055104).

21110002110202 is a wasteful number, since it uses less digits than its factorization.

21110002110202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10555001055103.

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

Adding to 21110002110202 its reverse (20201120001112), we get a palindrome (41311122111314).

The spelling of 21110002110202 in words is "twenty-one trillion, one hundred ten billion, two million, one hundred ten thousand, two hundred two".