122021200013 has 4 divisors (see below), whose sum is σ = 122029794588. Its totient is φ = 122012605440.

The previous prime is 122021200009. The next prime is 122021200031. The reversal of 122021200013 is 310002120221.

It is a happy number.

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 80632145764 + 41389054249 = 283958^2 + 203443^2 .

It is a cyclic number.

It is not a de Polignac number, because 122021200013 - 2² = 122021200009 is a prime.

It is a super-2 number, since 2×122021200013² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122021200513) 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, 4275956 + ... + 4304397.

It is an arithmetic number, because the mean of its divisors is an integer number (30507448647).

Almost surely, 2^122021200013 is an apocalyptic number.

It is an amenable number.

122021200013 is a deficient number, since it is larger than the sum of its proper divisors (8594575).

122021200013 is an equidigital number, since it uses as much as digits as its factorization.

122021200013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8594574.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 122021200013 its reverse (310002120221), we get a palindrome (432023320234).

The spelling of 122021200013 in words is "one hundred twenty-two billion, twenty-one million, two hundred thousand, thirteen".