1021102100210 has 64 divisors (see below), whose sum is σ = 1885837852800. Its totient is φ = 397859804160.

The previous prime is 1021102100177. The next prime is 1021102100261. The reversal of 1021102100210 is 120012011201.

It is a junction number, because it is equal to n+sod(n) for n = 1021102100191 and 1021102100200.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 400588016 + ... + 400590564.

It is an arithmetic number, because the mean of its divisors is an integer number (29466216450).

Almost surely, 2^{1021102100210} is an apocalyptic number.

1021102100210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021102100210 is a deficient number, since it is larger than the sum of its proper divisors (864735752590).

1021102100210 is a wasteful number, since it uses less digits than its factorization.

1021102100210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4763.

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

Adding to 1021102100210 its reverse (120012011201), we get a palindrome (1141114111411).

The spelling of 1021102100210 in words is "one trillion, twenty-one billion, one hundred two million, one hundred thousand, two hundred ten".