1002122120001 has 4 divisors (see below), whose sum is σ = 1336162826672. Its totient is φ = 668081413332.

The previous prime is 1002122119997. The next prime is 1002122120023. The reversal of 1002122120001 is 1000212212001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1002122120001 - 2² = 1002122119997 is a prime.

It is a super-4 number, since 4×1002122120001⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002122120081) 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, 167020353331 + ... + 167020353336.

It is an arithmetic number, because the mean of its divisors is an integer number (334040706668).

Almost surely, 2^{1002122120001} is an apocalyptic number.

It is an amenable number.

1002122120001 is a deficient number, since it is larger than the sum of its proper divisors (334040706671).

1002122120001 is an equidigital number, since it uses as much as digits as its factorization.

1002122120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334040706670.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1002122120001 its reverse (1000212212001), we get a palindrome (2002334332002).

It can be divided in two parts, 100212212000 and 1, that added together give a palindrome (100212212001).

The spelling of 1002122120001 in words is "one trillion, two billion, one hundred twenty-two million, one hundred twenty thousand, one".