1201102102100 has 54 divisors (see below), whose sum is σ = 2693181090222. Its totient is φ = 464942712000.

The previous prime is 1201102102087. The next prime is 1201102102111. The reversal of 1201102102100 is 12012011021.

It can be written as a sum of positive squares in 3 ways, for example, as 197009924164 + 1004092177936 = 443858^2 + 1002044^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6153131 + ... + 6345330.

It is an arithmetic number, because the mean of its divisors is an integer number (49873723893).

Almost surely, 2^{1201102102100} is an apocalyptic number.

1201102102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201102102100 is an abundant number, since it is smaller than the sum of its proper divisors (1492078988122).

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

1201102102100 is a wasteful number, since it uses less digits than its factorization.

1201102102100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12498537 (or 12498499 counting only the distinct ones).

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

Adding to 1201102102100 its reverse (12012011021), we get a palindrome (1213114113121).

The spelling of 1201102102100 in words is "one trillion, two hundred one billion, one hundred two million, one hundred two thousand, one hundred".