1021100110212 has 384 divisors, whose sum is σ = 3138727818240. Its totient is φ = 251101347840.

The previous prime is 1021100110201. The next prime is 1021100110243. The reversal of 1021100110212 is 2120110011201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 160521912 + ... + 160528272.

It is an arithmetic number, because the mean of its divisors is an integer number (8173770360).

Almost surely, 2^{1021100110212} is an apocalyptic number.

1021100110212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021100110212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1569363909120).

1021100110212 is an abundant number, since it is smaller than the sum of its proper divisors (2117627708028).

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

1021100110212 is a wasteful number, since it uses less digits than its factorization.

1021100110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6591 (or 6589 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1021100110212 its reverse (2120110011201), we get a palindrome (3141210121413).

The spelling of 1021100110212 in words is "one trillion, twenty-one billion, one hundred million, one hundred ten thousand, two hundred twelve".