1000210100021 has 16 divisors (see below), whose sum is σ = 1129092264000. Its totient is φ = 877671849600.

The previous prime is 1000210099891. The next prime is 1000210100039. The reversal of 1000210100021 is 1200010120001.

It is a cyclic number.

It is not a de Polignac number, because 1000210100021 - 2²⁶ = 1000142991157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000210099981 and 1000210100008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000210100041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645686 + ... + 1554776.

It is an arithmetic number, because the mean of its divisors is an integer number (70568266500).

Almost surely, 2^{1000210100021} is an apocalyptic number.

1000210100021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000210100021 is a deficient number, since it is larger than the sum of its proper divisors (128882163979).

1000210100021 is a wasteful number, since it uses less digits than its factorization.

1000210100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912580.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1000210100021 its reverse (1200010120001), we get a palindrome (2200220220022).

The spelling of 1000210100021 in words is "one trillion, two hundred ten million, one hundred thousand, twenty-one".