1201020102100 has 216 divisors, whose sum is σ = 3407439271040. Its totient is φ = 357743278080.

The previous prime is 1201020102097. The next prime is 1201020102167. The reversal of 1201020102100 is 12010201021.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2401561 + ... + 2858239.

Almost surely, 2^{1201020102100} is an apocalyptic number.

1201020102100 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 1201020102100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1703719635520).

1201020102100 is an abundant number, since it is smaller than the sum of its proper divisors (2206419168940).

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

1201020102100 is a wasteful number, since it uses less digits than its factorization.

1201020102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456747 (or 456723 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1201020102100 its reverse (12010201021), we get a palindrome (1213030303121).

1201020102100 divided by its reverse (12010201021) gives a square (100 = 10²).

The spelling of 1201020102100 in words is "one trillion, two hundred one billion, twenty million, one hundred two thousand, one hundred".