21010302098 has 4 divisors (see below), whose sum is σ = 31515453150. Its totient is φ = 10505151048.

The previous prime is 21010302097. The next prime is 21010302143. The reversal of 21010302098 is 89020301012.

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., 15570797089 + 5439505009 = 124783^2 + 73753^2 .

It is not an unprimeable number, because it can be changed into a prime (21010302097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5252575523 + ... + 5252575526.

Almost surely, 2^21010302098 is an apocalyptic number.

21010302098 is a deficient number, since it is larger than the sum of its proper divisors (10505151052).

21010302098 is a wasteful number, since it uses less digits than its factorization.

21010302098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10505151051.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 21010302098 in words is "twenty-one billion, ten million, three hundred two thousand, ninety-eight".