2021121102211 has 2 divisors, whose sum is σ = 2021121102212. Its totient is φ = 2021121102210.

The previous prime is 2021121102181. The next prime is 2021121102229. The reversal of 2021121102211 is 1122011211202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021121102211 - 2¹³ = 2021121094019 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021121112211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010560551105 + 1010560551106.

It is an arithmetic number, because the mean of its divisors is an integer number (1010560551106).

Almost surely, 2^{2021121102211} is an apocalyptic number.

2021121102211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021121102211 is an equidigital number, since it uses as much as digits as its factorization.

2021121102211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2021121102211 its reverse (1122011211202), we get a palindrome (3143132313413).

The spelling of 2021121102211 in words is "two trillion, twenty-one billion, one hundred twenty-one million, one hundred two thousand, two hundred eleven".