2100021021010 has 32 divisors (see below), whose sum is σ = 4128489585792. Its totient is φ = 762752906880.

The previous prime is 2100021020987. The next prime is 2100021021013. The reversal of 2100021021010 is 101201200012.

It is a super-2 number, since 2×2100021021010² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (2100021021013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11044062 + ... + 11232601.

It is an arithmetic number, because the mean of its divisors is an integer number (129015299556).

Almost surely, 2^{2100021021010} is an apocalyptic number.

2100021021010 is a deficient number, since it is larger than the sum of its proper divisors (2028468564782).

2100021021010 is a wasteful number, since it uses less digits than its factorization.

2100021021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22277538.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2100021021010 its reverse (101201200012), we get a palindrome (2201222221022).

The spelling of 2100021021010 in words is "two trillion, one hundred billion, twenty-one million, twenty-one thousand, ten".