1021012100210 has 8 divisors (see below), whose sum is σ = 1837821780396. Its totient is φ = 408404840080.

The previous prime is 1021012100203. The next prime is 1021012100233. The reversal of 1021012100210 is 120012101201.

It can be written as a sum of positive squares in 2 ways, for example, as 883376294161 + 137635806049 = 939881^2 + 370993^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1021012100191 and 1021012100200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51050605001 + ... + 51050605020.

Almost surely, 2^{1021012100210} is an apocalyptic number.

1021012100210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021012100210 is a deficient number, since it is larger than the sum of its proper divisors (816809680186).

1021012100210 is a wasteful number, since it uses less digits than its factorization.

1021012100210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102101210028.

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

Adding to 1021012100210 its reverse (120012101201), we get a palindrome (1141024201411).

Subtracting from 1021012100210 its reverse (120012101201), we obtain a palindrome (900999999009).

The spelling of 1021012100210 in words is "one trillion, twenty-one billion, twelve million, one hundred thousand, two hundred ten".