1211011002201 has 96 divisors (see below), whose sum is σ = 2208423401856. Its totient is φ = 580245120000.

The previous prime is 1211011002197. The next prime is 1211011002221. The reversal of 1211011002201 is 1022001101121.

It is not a de Polignac number, because 1211011002201 - 2² = 1211011002197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211011002221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27326181 + ... + 27370461.

It is an arithmetic number, because the mean of its divisors is an integer number (23004410436).

Almost surely, 2^{1211011002201} is an apocalyptic number.

1211011002201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1211011002201 is a deficient number, since it is larger than the sum of its proper divisors (997412399655).

1211011002201 is a wasteful number, since it uses less digits than its factorization.

1211011002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45623 (or 45616 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1211011002201 its reverse (1022001101121), we get a palindrome (2233012103322).

The spelling of 1211011002201 in words is "one trillion, two hundred eleven billion, eleven million, two thousand, two hundred one".