2111221201100 has 54 divisors (see below), whose sum is σ = 5035698796212. Its totient is φ = 767716796000.

The previous prime is 2111221201069. The next prime is 2111221201139. The reversal of 2111221201100 is 11021221112.

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, 87228446 + ... + 87252645.

Almost surely, 2^{2111221201100} is an apocalyptic number.

2111221201100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111221201100 is an abundant number, since it is smaller than the sum of its proper divisors (2924477595112).

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

2111221201100 is a wasteful number, since it uses less digits than its factorization.

2111221201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174481127 (or 174481109 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2111221201100 its reverse (11021221112), we get a palindrome (2122242422212).

It can be divided in two parts, 21112 and 21201100, that added together give a palindrome (21222212).

The spelling of 2111221201100 in words is "two trillion, one hundred eleven billion, two hundred twenty-one million, two hundred one thousand, one hundred".