2121012212022 has 48 divisors (see below), whose sum is σ = 5015622502800. Its totient is φ = 642433420800.

The previous prime is 2121012212021. The next prime is 2121012212041. The reversal of 2121012212022 is 2202122101212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2121012211986 and 2121012212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121012212021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2050647 + ... + 2906402.

It is an arithmetic number, because the mean of its divisors is an integer number (104492135475).

Almost surely, 2^{2121012212022} is an apocalyptic number.

2121012212022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2121012212022 is an abundant number, since it is smaller than the sum of its proper divisors (2894610290778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121012212022 is a wasteful number, since it uses less digits than its factorization.

2121012212022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4959229 (or 4959226 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2121012212022 its reverse (2202122101212), we get a palindrome (4323134313234).

The spelling of 2121012212022 in words is "two trillion, one hundred twenty-one billion, twelve million, two hundred twelve thousand, twenty-two".