2121122020101 has 32 divisors (see below), whose sum is σ = 3339349917696. Its totient is φ = 1171951200000.

The previous prime is 2121122020093. The next prime is 2121122020133. The reversal of 2121122020101 is 1010202211212.

It is not a de Polignac number, because 2121122020101 - 2³ = 2121122020093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121122020001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 666100 + ... + 2164701.

It is an arithmetic number, because the mean of its divisors is an integer number (104354684928).

Almost surely, 2^{2121122020101} is an apocalyptic number.

2121122020101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2121122020101 is a deficient number, since it is larger than the sum of its proper divisors (1218227897595).

2121122020101 is a wasteful number, since it uses less digits than its factorization.

2121122020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831993.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2121122020101 its reverse (1010202211212), we get a palindrome (3131324231313).

The spelling of 2121122020101 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-two million, twenty thousand, one hundred one".