1202022001001 has 4 divisors (see below), whose sum is σ = 1202028004692. Its totient is φ = 1202015997312.

The previous prime is 1202022000997. The next prime is 1202022001007. The reversal of 1202022001001 is 1001002202021.

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 1139981154601 + 62040846400 = 1067699^2 + 249080^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202022001001 - 2² = 1202022000997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1202022001007) 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, 2690780 + ... + 3105533.

It is an arithmetic number, because the mean of its divisors is an integer number (300507001173).

Almost surely, 2^{1202022001001} is an apocalyptic number.

It is an amenable number.

1202022001001 is a deficient number, since it is larger than the sum of its proper divisors (6003691).

1202022001001 is an equidigital number, since it uses as much as digits as its factorization.

1202022001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6003690.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1202022001001 its reverse (1001002202021), we get a palindrome (2203024203022).

The spelling of 1202022001001 in words is "one trillion, two hundred two billion, twenty-two million, one thousand, one".