21000110002 has 8 divisors (see below), whose sum is σ = 31560396336. Its totient is φ = 10479977892.

The previous prime is 21000109937. The next prime is 21000110029. The reversal of 21000110002 is 20001100012.

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

It is a super-2 number, since 2×21000110002² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10037248 + ... + 10039339.

It is an arithmetic number, because the mean of its divisors is an integer number (3945049542).

Almost surely, 2^21000110002 is an apocalyptic number.

21000110002 is a deficient number, since it is larger than the sum of its proper divisors (10560286334).

21000110002 is a wasteful number, since it uses less digits than its factorization.

21000110002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20077112.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 21000110002 its reverse (20001100012), we get a palindrome (41001210014).

The spelling of 21000110002 in words is "twenty-one billion, one hundred ten thousand, two".