20122011229 has 2 divisors, whose sum is σ = 20122011230. Its totient is φ = 20122011228.

The previous prime is 20122011149. The next prime is 20122011251. The reversal of 20122011229 is 92211022102.

It is an a-pointer prime, because the next prime (20122011251) can be obtained adding 20122011229 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20085408729 + 36602500 = 141723^2 + 6050^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122011229 - 2⁹ = 20122010717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20122014229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061005614 + 10061005615.

It is an arithmetic number, because the mean of its divisors is an integer number (10061005615).

Almost surely, 2^20122011229 is an apocalyptic number.

It is an amenable number.

20122011229 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122011229 is an equidigital number, since it uses as much as digits as its factorization.

20122011229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 20122011229 in words is "twenty billion, one hundred twenty-two million, eleven thousand, two hundred twenty-nine".