122021047013 has 4 divisors (see below), whose sum is σ = 124021392108. Its totient is φ = 120020701920.

The previous prime is 122021047007. The next prime is 122021047037. The reversal of 122021047013 is 310740120221.

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 64899091009 + 57121956004 = 254753^2 + 239002^2 .

It is a cyclic number.

It is not a de Polignac number, because 122021047013 - 2¹⁴ = 122021030629 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 122021047013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122021047063) 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, 1000172456 + ... + 1000172577.

It is an arithmetic number, because the mean of its divisors is an integer number (31005348027).

Almost surely, 2^122021047013 is an apocalyptic number.

It is an amenable number.

122021047013 is a deficient number, since it is larger than the sum of its proper divisors (2000345095).

122021047013 is an equidigital number, since it uses as much as digits as its factorization.

122021047013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000345094.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 122021047013 its reverse (310740120221), we get a palindrome (432761167234).

The spelling of 122021047013 in words is "one hundred twenty-two billion, twenty-one million, forty-seven thousand, thirteen".