21012001010210 has 16 divisors (see below), whose sum is σ = 43224687792576. Its totient is φ = 7204114632048.

The previous prime is 21012001010183. The next prime is 21012001010233. The reversal of 21012001010210 is 1201010021012.

It is a junction number, because it is equal to n+sod(n) for n = 21012001010191 and 21012001010200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150085721432 + ... + 150085721571.

It is an arithmetic number, because the mean of its divisors is an integer number (2701542987036).

Almost surely, 2^{21012001010210} is an apocalyptic number.

21012001010210 is an abundant number, since it is smaller than the sum of its proper divisors (22212686782366).

21012001010210 is a wasteful number, since it uses less digits than its factorization.

21012001010210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300171443017.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21012001010210 its reverse (1201010021012), we get a palindrome (22213011031222).

The spelling of 21012001010210 in words is "twenty-one trillion, twelve billion, one million, ten thousand, two hundred ten".