2121002120223 has 48 divisors (see below), whose sum is σ = 3619577235456. Its totient is φ = 1171186378560.

The previous prime is 2121002120219. The next prime is 2121002120267. The reversal of 2121002120223 is 3220212001212.

2121002120223 is a `hidden beast` number, since 21 + 210 + 0 + 212 + 0 + 223 = 666.

It is not a de Polignac number, because 2121002120223 - 2² = 2121002120219 is a prime.

It is a super-2 number, since 2×2121002120223² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121002120196 and 2121002120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121002120213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 538861 + ... + 2128937.

It is an arithmetic number, because the mean of its divisors is an integer number (75407859072).

Almost surely, 2^{2121002120223} is an apocalyptic number.

2121002120223 is a deficient number, since it is larger than the sum of its proper divisors (1498575115233).

2121002120223 is a wasteful number, since it uses less digits than its factorization.

2121002120223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590804 (or 1590801 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 2121002120223 its reverse (3220212001212), we get a palindrome (5341214121435).

The spelling of 2121002120223 in words is "two trillion, one hundred twenty-one billion, two million, one hundred twenty thousand, two hundred twenty-three".