21000000201010 has 16 divisors (see below), whose sum is σ = 37824498121536. Its totient is φ = 8394556133808.

The previous prime is 21000000200989. The next prime is 21000000201017. The reversal of 21000000201010 is 1010200000012.

It is a junction number, because it is equal to n+sod(n) for n = 21000000200984 and 21000000201002.

It is not an unprimeable number, because it can be changed into a prime (21000000201017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680477124 + ... + 680507983.

It is an arithmetic number, because the mean of its divisors is an integer number (2364031132596).

Almost surely, 2^{21000000201010} is an apocalyptic number.

21000000201010 is a deficient number, since it is larger than the sum of its proper divisors (16824497920526).

21000000201010 is a wasteful number, since it uses less digits than its factorization.

21000000201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360986657.

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

Adding to 21000000201010 its reverse (1010200000012), we get a palindrome (22010200201022).

The spelling of 21000000201010 in words is "twenty-one trillion, two hundred one thousand, ten".