20220120001009 has 8 divisors (see below), whose sum is σ = 20781868129128. Its totient is φ = 19659174946560.

The previous prime is 20220120001007. The next prime is 20220120001051. The reversal of 20220120001009 is 90010002102202.

It can be written as a sum of positive squares in 4 ways, for example, as 637238185984 + 19582881815025 = 798272^2 + 4425255^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20220120001009 - 2¹ = 20220120001007 is a prime.

It is a super-2 number, since 2×20220120001009² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20220120001007) 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, 200717362 + ... + 200818075.

It is an arithmetic number, because the mean of its divisors is an integer number (2597733516141).

Almost surely, 2^{20220120001009} is an apocalyptic number.

It is an amenable number.

20220120001009 is a deficient number, since it is larger than the sum of its proper divisors (561748128119).

20220120001009 is a wasteful number, since it uses less digits than its factorization.

20220120001009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401536835.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 20220120001009 in words is "twenty trillion, two hundred twenty billion, one hundred twenty million, one thousand, nine".