2101220100112 has 80 divisors (see below), whose sum is σ = 4856753433600. Its totient is φ = 861681807360.

The previous prime is 2101220100101. The next prime is 2101220100121. The reversal of 2101220100112 is 2110010221012.

It is a super-2 number, since 2×2101220100112² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2101220100092 and 2101220100101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3090937 + ... + 3708952.

It is an arithmetic number, because the mean of its divisors is an integer number (60709417920).

Almost surely, 2^{2101220100112} is an apocalyptic number.

It is an amenable number.

2101220100112 is an abundant number, since it is smaller than the sum of its proper divisors (2755533333488).

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

2101220100112 is a wasteful number, since it uses less digits than its factorization.

2101220100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6800024 (or 6800018 counting only the distinct ones).

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

Adding to 2101220100112 its reverse (2110010221012), we get a palindrome (4211230321124).

The spelling of 2101220100112 in words is "two trillion, one hundred one billion, two hundred twenty million, one hundred thousand, one hundred twelve".