1102100201172 has 18 divisors (see below), whose sum is σ = 2785864397498. Its totient is φ = 367366733712.

The previous prime is 1102100201171. The next prime is 1102100201239. The reversal of 1102100201172 is 2711020012011.

It can be written as a sum of positive squares in only one way, i.e., 975104900676 + 126995300496 = 987474^2 + 356364^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102100201171) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15306947203 + ... + 15306947274.

Almost surely, 2^{1102100201172} is an apocalyptic number.

1102100201172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1102100201172 is an abundant number, since it is smaller than the sum of its proper divisors (1683764196326).

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

1102100201172 is a wasteful number, since it uses less digits than its factorization.

1102100201172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30613894487 (or 30613894482 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 18.

Adding to 1102100201172 its reverse (2711020012011), we get a palindrome (3813120213183).

The spelling of 1102100201172 in words is "one trillion, one hundred two billion, one hundred million, two hundred one thousand, one hundred seventy-two".