1200002212001 has 2 divisors, whose sum is σ = 1200002212002. Its totient is φ = 1200002212000.

The previous prime is 1200002211977. The next prime is 1200002212007. The reversal of 1200002212001 is 1002122000021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1051037090401 + 148965121600 = 1025201^2 + 385960^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200002212001 - 2²² = 1199998017697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200002212007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600001106000 + 600001106001.

It is an arithmetic number, because the mean of its divisors is an integer number (600001106001).

Almost surely, 2^{1200002212001} is an apocalyptic number.

It is an amenable number.

1200002212001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200002212001 is an equidigital number, since it uses as much as digits as its factorization.

1200002212001 is an evil number, because the sum of its binary digits is even.

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

Adding to 1200002212001 its reverse (1002122000021), we get a palindrome (2202124212022).

The spelling of 1200002212001 in words is "one trillion, two hundred billion, two million, two hundred twelve thousand, one".