2120101021100 has 72 divisors (see below), whose sum is σ = 4619615471520. Its totient is φ = 844541982720.

The previous prime is 2120101020977. The next prime is 2120101021109. The reversal of 2120101021100 is 11201010212.

It is not an unprimeable number, because it can be changed into a prime (2120101021109) 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, 56461532 + ... + 56499068.

Almost surely, 2^{2120101021100} is an apocalyptic number.

2120101021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120101021100 is an abundant number, since it is smaller than the sum of its proper divisors (2499514450420).

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

2120101021100 is a wasteful number, since it uses less digits than its factorization.

2120101021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39867 (or 39860 counting only the distinct ones).

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

Adding to 2120101021100 its reverse (11201010212), we get a palindrome (2131302031312).

The spelling of 2120101021100 in words is "two trillion, one hundred twenty billion, one hundred one million, twenty-one thousand, one hundred".