2101211122120 has 32 divisors (see below), whose sum is σ = 5157518209920. Its totient is φ = 764076771520.

The previous prime is 2101211122117. The next prime is 2101211122123. The reversal of 2101211122120 is 212211121012.

It is an interprime number because it is at equal distance from previous prime (2101211122117) and next prime (2101211122123).

It is a junction number, because it is equal to n+sod(n) for n = 2101211122094 and 2101211122103.

It is not an unprimeable number, because it can be changed into a prime (2101211122123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2387739472 + ... + 2387740351.

It is an arithmetic number, because the mean of its divisors is an integer number (161172444060).

Almost surely, 2^{2101211122120} is an apocalyptic number.

2101211122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101211122120 is an abundant number, since it is smaller than the sum of its proper divisors (3056307087800).

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

2101211122120 is a wasteful number, since it uses less digits than its factorization.

2101211122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4775479845 (or 4775479841 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2101211122120 its reverse (212211121012), we get a palindrome (2313422243132).

The spelling of 2101211122120 in words is "two trillion, one hundred one billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twenty".