1211001201202 has 32 divisors (see below), whose sum is σ = 1979014009392. Its totient is φ = 552429932544.

The previous prime is 1211001201199. The next prime is 1211001201217. The reversal of 1211001201202 is 2021021001121.

It can be written as a sum of positive squares in 8 ways, for example, as 385118295241 + 825882905961 = 620579^2 + 908781^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1591998 + ... + 2226310.

Almost surely, 2^{1211001201202} is an apocalyptic number.

1211001201202 is a deficient number, since it is larger than the sum of its proper divisors (768012808190).

1211001201202 is a wasteful number, since it uses less digits than its factorization.

1211001201202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635182.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1211001201202 its reverse (2021021001121), we get a palindrome (3232022202323).

The spelling of 1211001201202 in words is "one trillion, two hundred eleven billion, one million, two hundred one thousand, two hundred two".