1021012102200 has 192 divisors, whose sum is σ = 3290734379520. Its totient is φ = 261664128000.

The previous prime is 1021012102171. The next prime is 1021012102219. The reversal of 1021012102200 is 22012101201.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1338465 + ... + 1957935.

It is an arithmetic number, because the mean of its divisors is an integer number (17139241560).

Almost surely, 2^{1021012102200} is an apocalyptic number.

1021012102200 is a gapful number since it is divisible by the number (10) 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 1021012102200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1645367189760).

1021012102200 is an abundant number, since it is smaller than the sum of its proper divisors (2269722277320).

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

1021012102200 is a wasteful number, since it uses less digits than its factorization.

1021012102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619598 (or 619589 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1021012102200 its reverse (22012101201), we get a palindrome (1043024203401).

Subtracting from 1021012102200 its reverse (22012101201), we obtain a palindrome (999000000999).

The spelling of 1021012102200 in words is "one trillion, twenty-one billion, twelve million, one hundred two thousand, two hundred".