21001112002010 has 192 divisors, whose sum is σ = 47018031648768. Its totient is φ = 6710436182016.

The previous prime is 21001112001983. The next prime is 21001112002019. The reversal of 21001112002010 is 1020021110012.

It is a junction number, because it is equal to n+sod(n) for n = 21001112001982 and 21001112002000.

It is not an unprimeable number, because it can be changed into a prime (21001112002019) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 553267952 + ... + 553305908.

It is an arithmetic number, because the mean of its divisors is an integer number (244885581504).

Almost surely, 2^{21001112002010} is an apocalyptic number.

21001112002010 is an abundant number, since it is smaller than the sum of its proper divisors (26016919646758).

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

21001112002010 is a wasteful number, since it uses less digits than its factorization.

21001112002010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38645 (or 38638 counting only the distinct ones).

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

Adding to 21001112002010 its reverse (1020021110012), we get a palindrome (22021133112022).

The spelling of 21001112002010 in words is "twenty-one trillion, one billion, one hundred twelve million, two thousand, ten".