1021100101210 has 32 divisors (see below), whose sum is σ = 2211103981440. Its totient is φ = 331665596352.

The previous prime is 1021100101201. The next prime is 1021100101213. The reversal of 1021100101210 is 121010011201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (1021100101213) 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, 383870889 + ... + 383873548.

It is an arithmetic number, because the mean of its divisors is an integer number (69096999420).

Almost surely, 2^{1021100101210} is an apocalyptic number.

1021100101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021100101210 is an abundant number, since it is smaller than the sum of its proper divisors (1190003880230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021100101210 is a wasteful number, since it uses less digits than its factorization.

1021100101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767744470.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1021100101210 its reverse (121010011201), we get a palindrome (1142110112411).

Subtracting from 1021100101210 its reverse (121010011201), we obtain a palindrome (900090090009).

The spelling of 1021100101210 in words is "one trillion, twenty-one billion, one hundred million, one hundred one thousand, two hundred ten".