120210123111221 has 8 divisors (see below), whose sum is σ = 141225878900064. Its totient is φ = 100875627785520.

The previous prime is 120210123111187. The next prime is 120210123111223. The reversal of 120210123111221 is 122111321012021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120210123111221 - 2²⁶ = 120210056002357 is a prime.

It is a super-2 number, since 2×120210123111221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120210123111193 and 120210123111202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120210123111223) 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, 420315115631 + ... + 420315115916.

It is an arithmetic number, because the mean of its divisors is an integer number (17653234862508).

Almost surely, 2^{120210123111221} is an apocalyptic number.

120210123111221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120210123111221 is a deficient number, since it is larger than the sum of its proper divisors (21015755788843).

120210123111221 is a wasteful number, since it uses less digits than its factorization.

120210123111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840630231571.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 120210123111221 its reverse (122111321012021), we get a palindrome (242321444123242).

The spelling of 120210123111221 in words is "one hundred twenty trillion, two hundred ten billion, one hundred twenty-three million, one hundred eleven thousand, two hundred twenty-one".