130002222121021 has 4 divisors (see below), whose sum is σ = 130032114565500. Its totient is φ = 129972329676544.

The previous prime is 130002222121019. The next prime is 130002222121033. The reversal of 130002222121021 is 120121222200031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23615663564025 + 106386558556996 = 4859595^2 + 10314386^2 .

It is a cyclic number.

It is not a de Polignac number, because 130002222121021 - 2¹ = 130002222121019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130002222121021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130002222121921) 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, 14946215716 + ... + 14946224413.

It is an arithmetic number, because the mean of its divisors is an integer number (32508028641375).

Almost surely, 2^{130002222121021} is an apocalyptic number.

It is an amenable number.

130002222121021 is a deficient number, since it is larger than the sum of its proper divisors (29892444479).

130002222121021 is an equidigital number, since it uses as much as digits as its factorization.

130002222121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29892444478.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 130002222121021 its reverse (120121222200031), we get a palindrome (250123444321052).

The spelling of 130002222121021 in words is "one hundred thirty trillion, two billion, two hundred twenty-two million, one hundred twenty-one thousand, twenty-one".