21120122001010 has 8 divisors (see below), whose sum is σ = 38016219601836. Its totient is φ = 8448048800400.

The previous prime is 21120122001001. The next prime is 21120122001037. The reversal of 21120122001010 is 1010022102112.

It can be written as a sum of positive squares in 2 ways, for example, as 20546665662649 + 573456338361 = 4532843^2 + 757269^2 .

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

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, 1056006100041 + ... + 1056006100060.

Almost surely, 2^{21120122001010} is an apocalyptic number.

21120122001010 is a deficient number, since it is larger than the sum of its proper divisors (16896097600826).

21120122001010 is a wasteful number, since it uses less digits than its factorization.

21120122001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112012200108.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21120122001010 its reverse (1010022102112), we get a palindrome (22130144103122).

The spelling of 21120122001010 in words is "twenty-one trillion, one hundred twenty billion, one hundred twenty-two million, one thousand, ten".