2121001022 has 32 divisors (see below), whose sum is σ = 3852811008. Its totient is φ = 854879616.

The previous prime is 2121001019. The next prime is 2121001031. The reversal of 2121001022 is 2201001212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2121000994 and 2121001012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422813 + ... + 427799.

It is an arithmetic number, because the mean of its divisors is an integer number (120400344).

Almost surely, 2^2121001022 is an apocalyptic number.

2121001022 is a deficient number, since it is larger than the sum of its proper divisors (1731809986).

2121001022 is a wasteful number, since it uses less digits than its factorization.

2121001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6800.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2121001022 is about 46054.3268542707. The cubic root of 2121001022 is about 1284.8338184366.

Adding to 2121001022 its reverse (2201001212), we get a palindrome (4322002234).

The spelling of 2121001022 in words is "two billion, one hundred twenty-one million, one thousand, twenty-two".