2021121000122 has 16 divisors (see below), whose sum is σ = 3466601511552. Its totient is φ = 865739050800.

The previous prime is 2021121000121. The next prime is 2021121000163. The reversal of 2021121000122 is 2210001211202.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 2021121000097 and 2021121000106.

It is not an unprimeable number, because it can be changed into a prime (2021121000121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37944398 + ... + 37997625.

It is an arithmetic number, because the mean of its divisors is an integer number (216662594472).

Almost surely, 2^{2021121000122} is an apocalyptic number.

2021121000122 is a deficient number, since it is larger than the sum of its proper divisors (1445480511430).

2021121000122 is a wasteful number, since it uses less digits than its factorization.

2021121000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75943933.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2021121000122 its reverse (2210001211202), we get a palindrome (4231122211324).

The spelling of 2021121000122 in words is "two trillion, twenty-one billion, one hundred twenty-one million, one hundred twenty-two", and thus it is an aban number.