2021121022 has 4 divisors (see below), whose sum is σ = 3031681536. Its totient is φ = 1010560510.

The previous prime is 2021121017. The next prime is 2021121061. The reversal of 2021121022 is 2201211202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2021120993 and 2021121011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505280254 + ... + 505280257.

It is an arithmetic number, because the mean of its divisors is an integer number (757920384).

Almost surely, 2^2021121022 is an apocalyptic number.

2021121022 is a deficient number, since it is larger than the sum of its proper divisors (1010560514).

2021121022 is a wasteful number, since it uses less digits than its factorization.

2021121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010560513.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2021121022 is about 44956.8795847755. The cubic root of 2021121022 is about 1264.3406651179.

Adding to 2021121022 its reverse (2201211202), we get a palindrome (4222332224).

The spelling of 2021121022 in words is "two billion, twenty-one million, one hundred twenty-one thousand, twenty-two".