21011002212010 has 8 divisors (see below), whose sum is σ = 37819803981636. Its totient is φ = 8404400884800.

The previous prime is 21011002212007. The next prime is 21011002212071. The reversal of 21011002212010 is 1021220011012.

It can be written as a sum of positive squares in 2 ways, for example, as 19965338491081 + 1045663720929 = 4468259^2 + 1022577^2 .

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

It is a super-2 number, since 2×21011002212010² (a number of 27 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, 1050550110591 + ... + 1050550110610.

Almost surely, 2^{21011002212010} is an apocalyptic number.

21011002212010 is a deficient number, since it is larger than the sum of its proper divisors (16808801769626).

21011002212010 is a wasteful number, since it uses less digits than its factorization.

21011002212010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101100221208.

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

Adding to 21011002212010 its reverse (1021220011012), we get a palindrome (22032222223022).

The spelling of 21011002212010 in words is "twenty-one trillion, eleven billion, two million, two hundred twelve thousand, ten".