2121200022 has 16 divisors (see below), whose sum is σ = 4243207680. Its totient is φ = 706932072.

The previous prime is 2121200021. The next prime is 2121200023. The reversal of 2121200022 is 2200021212.

It is an interprime number because it is at equal distance from previous prime (2121200021) and next prime (2121200023).

It is a junction number, because it is equal to n+sod(n) for n = 2121199980 and 2121200007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121200021) 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, 3679 + ... + 65237.

It is an arithmetic number, because the mean of its divisors is an integer number (265200480).

Almost surely, 2^2121200022 is an apocalyptic number.

2121200022 is an abundant number, since it is smaller than the sum of its proper divisors (2122007658).

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

2121200022 is a wasteful number, since it uses less digits than its factorization.

2121200022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67307.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2121200022 is about 46056.4872954940. The cubic root of 2121200022 is about 1284.8739997678.

Adding to 2121200022 its reverse (2200021212), we get a palindrome (4321221234).

The spelling of 2121200022 in words is "two billion, one hundred twenty-one million, two hundred thousand, twenty-two".