2010210000021 has 8 divisors (see below), whose sum is σ = 2978088888960. Its totient is φ = 1340139999996.

The previous prime is 2010210000017. The next prime is 2010210000049. The reversal of 2010210000021 is 1200000120102.

It is not a de Polignac number, because 2010210000021 - 2² = 2010210000017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2010209999958 and 2010210000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010210000091) 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, 37226111085 + ... + 37226111138.

It is an arithmetic number, because the mean of its divisors is an integer number (372261111120).

Almost surely, 2^{2010210000021} is an apocalyptic number.

It is an amenable number.

2010210000021 is a deficient number, since it is larger than the sum of its proper divisors (967878888939).

2010210000021 is an equidigital number, since it uses as much as digits as its factorization.

2010210000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74452222232 (or 74452222226 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2010210000021 its reverse (1200000120102), we get a palindrome (3210210120123).

The spelling of 2010210000021 in words is "two trillion, ten billion, two hundred ten million, twenty-one", and thus it is an aban number.