2121121021022 has 16 divisors (see below), whose sum is σ = 3368869836192. Its totient is φ = 998165541120.

The previous prime is 2121121021007. The next prime is 2121121021027. The reversal of 2121121021022 is 2201201211212.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121121021027) 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, 4888898 + ... + 5305050.

It is an arithmetic number, because the mean of its divisors is an integer number (210554364762).

Almost surely, 2^{2121121021022} is an apocalyptic number.

2121121021022 is a deficient number, since it is larger than the sum of its proper divisors (1247748815170).

2121121021022 is a wasteful number, since it uses less digits than its factorization.

2121121021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566083.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2121121021022 its reverse (2201201211212), we get a palindrome (4322322232234).

The spelling of 2121121021022 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-one million, twenty-one thousand, twenty-two".