2121122121022 has 16 divisors (see below), whose sum is σ = 3339897587712. Its totient is φ = 1008375157240.

The previous prime is 2121122120981. The next prime is 2121122121023. The reversal of 2121122121022 is 2201212211212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121122121023) 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, 138050254 + ... + 138065617.

It is an arithmetic number, because the mean of its divisors is an integer number (208743599232).

Almost surely, 2^{2121122121022} is an apocalyptic number.

2121122121022 is a deficient number, since it is larger than the sum of its proper divisors (1218775466690).

2121122121022 is a wasteful number, since it uses less digits than its factorization.

2121122121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276116063.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2121122121022 its reverse (2201212211212), we get a palindrome (4322334332234).

The spelling of 2121122121022 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-two million, one hundred twenty-one thousand, twenty-two".