21021101120010 has 16 divisors (see below), whose sum is σ = 50450642688096. Its totient is φ = 5605626965328.

The previous prime is 21021101119943. The next prime is 21021101120011. The reversal of 21021101120010 is 1002110112012.

It is not an unprimeable number, because it can be changed into a prime (21021101120011) 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, 350351685304 + ... + 350351685363.

It is an arithmetic number, because the mean of its divisors is an integer number (3153165168006).

Almost surely, 2^{21021101120010} is an apocalyptic number.

21021101120010 is an abundant number, since it is smaller than the sum of its proper divisors (29429541568086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21021101120010 is a wasteful number, since it uses less digits than its factorization.

21021101120010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700703370677.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21021101120010 its reverse (1002110112012), we get a palindrome (22023211232022).

The spelling of 21021101120010 in words is "twenty-one trillion, twenty-one billion, one hundred one million, one hundred twenty thousand, ten".