2121023121310 has 8 divisors (see below), whose sum is σ = 3817841618376. Its totient is φ = 848409248520.

The previous prime is 2121023121307. The next prime is 2121023121331. The reversal of 2121023121310 is 131213201212.

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

It is a super-2 number, since 2×2121023121310² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106051156056 + ... + 106051156075.

It is an arithmetic number, because the mean of its divisors is an integer number (477230202297).

Almost surely, 2^{2121023121310} is an apocalyptic number.

2121023121310 is a deficient number, since it is larger than the sum of its proper divisors (1696818497066).

2121023121310 is a wasteful number, since it uses less digits than its factorization.

2121023121310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212102312138.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2121023121310 its reverse (131213201212), we get a palindrome (2252236322522).

The spelling of 2121023121310 in words is "two trillion, one hundred twenty-one billion, twenty-three million, one hundred twenty-one thousand, three hundred ten".