1000210000021 has 4 divisors (see below), whose sum is σ = 1015138507552. Its totient is φ = 985281492492.

The previous prime is 1000209999983. The next prime is 1000210000037. The reversal of 1000210000021 is 1200000120001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000210000021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000209999959 and 1000210000013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000210000121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7464253665 + ... + 7464253798.

It is an arithmetic number, because the mean of its divisors is an integer number (253784626888).

Almost surely, 2^{1000210000021} is an apocalyptic number.

It is an amenable number.

1000210000021 is a deficient number, since it is larger than the sum of its proper divisors (14928507531).

1000210000021 is an equidigital number, since it uses as much as digits as its factorization.

1000210000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14928507530.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 1000210000021 its reverse (1200000120001), we get a palindrome (2200210120022).

The spelling of 1000210000021 in words is "one trillion, two hundred ten million, twenty-one", and thus it is an aban number.