2102201112100 has 72 divisors (see below), whose sum is σ = 4709474852096. Its totient is φ = 813661200000.

The previous prime is 2102201112091. The next prime is 2102201112103. The reversal of 2102201112100 is 12111022012.

It is not an unprimeable number, because it can be changed into a prime (2102201112103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30658855 + ... + 30727345.

Almost surely, 2^{2102201112100} is an apocalyptic number.

2102201112100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102201112100 is an abundant number, since it is smaller than the sum of its proper divisors (2607273739996).

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

2102201112100 is a wasteful number, since it uses less digits than its factorization.

2102201112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78437 (or 78430 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2102201112100 its reverse (12111022012), we get a palindrome (2114312134112).

The spelling of 2102201112100 in words is "two trillion, one hundred two billion, two hundred one million, one hundred twelve thousand, one hundred".