21230221298 has 32 divisors (see below), whose sum is σ = 37698357312. Its totient is φ = 8839771200.

The previous prime is 21230221297. The next prime is 21230221321. The reversal of 21230221298 is 89212203212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21230221291) 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, 245861 + ... + 320792.

It is an arithmetic number, because the mean of its divisors is an integer number (1178073666).

Almost surely, 2^21230221298 is an apocalyptic number.

21230221298 is a deficient number, since it is larger than the sum of its proper divisors (16468136014).

21230221298 is a wasteful number, since it uses less digits than its factorization.

21230221298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566810.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 21230221298 in words is "twenty-one billion, two hundred thirty million, two hundred twenty-one thousand, two hundred ninety-eight".