2011000001211 has 24 divisors (see below), whose sum is σ = 2998659920256. Its totient is φ = 1297341630720.

The previous prime is 2011000001207. The next prime is 2011000001221. The reversal of 2011000001211 is 1121000001102.

It is a happy number.

It is not a de Polignac number, because 2011000001211 - 2² = 2011000001207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2011000001193 and 2011000001202.

It is not an unprimeable number, because it can be changed into a prime (2011000001221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4645441 + ... + 5059853.

It is an arithmetic number, because the mean of its divisors is an integer number (124944163344).

Almost surely, 2^{2011000001211} is an apocalyptic number.

2011000001211 is a deficient number, since it is larger than the sum of its proper divisors (987659919045).

2011000001211 is a wasteful number, since it uses less digits than its factorization.

2011000001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431843 (or 431840 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 2011000001211 its reverse (1121000001102), we get a palindrome (3132000002313).

The spelling of 2011000001211 in words is "two trillion, eleven billion, one thousand, two hundred eleven".