2121023321230 has 16 divisors (see below), whose sum is σ = 4164918521904. Its totient is φ = 771281207680.

The previous prime is 2121023321167. The next prime is 2121023321251. The reversal of 2121023321230 is 321233201212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9641014987 + ... + 9641015206.

It is an arithmetic number, because the mean of its divisors is an integer number (260307407619).

Almost surely, 2^{2121023321230} is an apocalyptic number.

2121023321230 is a deficient number, since it is larger than the sum of its proper divisors (2043895200674).

2121023321230 is a wasteful number, since it uses less digits than its factorization.

2121023321230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19282030211.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2121023321230 its reverse (321233201212), we get a palindrome (2442256522442).

The spelling of 2121023321230 in words is "two trillion, one hundred twenty-one billion, twenty-three million, three hundred twenty-one thousand, two hundred thirty".