1000120220001 has 24 divisors (see below), whose sum is σ = 1651021532160. Its totient is φ = 571487083776.

The previous prime is 1000120219993. The next prime is 1000120220003. The reversal of 1000120220001 is 1000220210001.

It is not a de Polignac number, because 1000120220001 - 2³ = 1000120219993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1000120220003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4757760 + ... + 4963518.

It is an arithmetic number, because the mean of its divisors is an integer number (68792563840).

Almost surely, 2^{1000120220001} is an apocalyptic number.

It is an amenable number.

1000120220001 is a deficient number, since it is larger than the sum of its proper divisors (650901312159).

1000120220001 is a wasteful number, since it uses less digits than its factorization.

1000120220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282925 (or 282922 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1000120220001 its reverse (1000220210001), we get a palindrome (2000340430002).

The spelling of 1000120220001 in words is "one trillion, one hundred twenty million, two hundred twenty thousand, one".