2111021021011 has 16 divisors (see below), whose sum is σ = 2448793230336. Its totient is φ = 1782302423616.

The previous prime is 2111021021003. The next prime is 2111021021017. The reversal of 2111021021011 is 1101201201112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2111021021011 - 2³ = 2111021021003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111021020982 and 2111021021000.

It is not an unprimeable number, because it can be changed into a prime (2111021021017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6158535 + ... + 6492271.

It is an arithmetic number, because the mean of its divisors is an integer number (153049576896).

Almost surely, 2^{2111021021011} is an apocalyptic number.

2111021021011 is a deficient number, since it is larger than the sum of its proper divisors (337772209325).

2111021021011 is a wasteful number, since it uses less digits than its factorization.

2111021021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347298.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2111021021011 its reverse (1101201201112), we get a palindrome (3212222222123).

The spelling of 2111021021011 in words is "two trillion, one hundred eleven billion, twenty-one million, twenty-one thousand, eleven".