2010120021121 has 4 divisors (see below), whose sum is σ = 2010133436500. Its totient is φ = 2010106605744.

The previous prime is 2010120021079. The next prime is 2010120021193. The reversal of 2010120021121 is 1211200210102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1308646769521 + 701473251600 = 1143961^2 + 837540^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010120021121 - 2⁹ = 2010120020609 is a prime.

It is a super-2 number, since 2×2010120021121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2010120021521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6480366 + ... + 6783463.

It is an arithmetic number, because the mean of its divisors is an integer number (502533359125).

Almost surely, 2^{2010120021121} is an apocalyptic number.

It is an amenable number.

2010120021121 is a deficient number, since it is larger than the sum of its proper divisors (13415379).

2010120021121 is a wasteful number, since it uses less digits than its factorization.

2010120021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13415378.

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

Adding to 2010120021121 its reverse (1211200210102), we get a palindrome (3221320231223).

The spelling of 2010120021121 in words is "two trillion, ten billion, one hundred twenty million, twenty-one thousand, one hundred twenty-one".