1021200020122 has 8 divisors (see below), whose sum is σ = 1531827306900. Its totient is φ = 510590917824.

The previous prime is 1021200020053. The next prime is 1021200020129. The reversal of 1021200020122 is 2210200021201.

It is a happy number.

1021200020122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 963968548761 + 57231471361 = 981819^2 + 239231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1021200020129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4404847 + ... + 4630882.

Almost surely, 2^{1021200020122} is an apocalyptic number.

1021200020122 is a deficient number, since it is larger than the sum of its proper divisors (510627286778).

1021200020122 is an equidigital number, since it uses as much as digits as its factorization.

1021200020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9092240.

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

Adding to 1021200020122 its reverse (2210200021201), we get a palindrome (3231400041323).

The spelling of 1021200020122 in words is "one trillion, twenty-one billion, two hundred million, twenty thousand, one hundred twenty-two".