2011211102121 has 12 divisors (see below), whose sum is σ = 2903760408528. Its totient is φ = 1237668370224.

The previous prime is 2011211102077. The next prime is 2011211102171. The reversal of 2011211102121 is 1212011121102.

It is a happy number.

It is not a de Polignac number, because 2011211102121 - 2⁹ = 2011211101609 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011211102121.

It is not an unprimeable number, because it can be changed into a prime (2011211102171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1983442395 + ... + 1983443408.

It is an arithmetic number, because the mean of its divisors is an integer number (241980034044).

Almost surely, 2^{2011211102121} is an apocalyptic number.

It is an amenable number.

2011211102121 is a deficient number, since it is larger than the sum of its proper divisors (892549306407).

2011211102121 is a wasteful number, since it uses less digits than its factorization.

2011211102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3966885832 (or 3966885819 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2011211102121 its reverse (1212011121102), we get a palindrome (3223222223223).

The spelling of 2011211102121 in words is "two trillion, eleven billion, two hundred eleven million, one hundred two thousand, one hundred twenty-one".