2111021110129 has 2 divisors, whose sum is σ = 2111021110130. Its totient is φ = 2111021110128.

The previous prime is 2111021110111. The next prime is 2111021110141. The reversal of 2111021110129 is 9210111201112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2040383696400 + 70637413729 = 1428420^2 + 265777^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111021110129 - 2¹¹ = 2111021108081 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111021110169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055510555064 + 1055510555065.

It is an arithmetic number, because the mean of its divisors is an integer number (1055510555065).

Almost surely, 2^{2111021110129} is an apocalyptic number.

It is an amenable number.

2111021110129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111021110129 is an equidigital number, since it uses as much as digits as its factorization.

2111021110129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 22.

It can be divided in two parts, 211102 and 1110129, that added together give a palindrome (1321231).

The spelling of 2111021110129 in words is "two trillion, one hundred eleven billion, twenty-one million, one hundred ten thousand, one hundred twenty-nine".