122021111220111 has 12 divisors (see below), whose sum is σ = 176277978260592. Its totient is φ = 81335748070656.

The previous prime is 122021111220101. The next prime is 122021111220143. The reversal of 122021111220111 is 111022111120221.

It is a happy number.

122021111220111 is a `hidden beast` number, since 1 + 220 + 2 + 1 + 111 + 220 + 111 = 666.

It is not a de Polignac number, because 122021111220111 - 2¹³ = 122021111211919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122021111220101) 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, 971551171 + ... + 971676756.

It is an arithmetic number, because the mean of its divisors is an integer number (14689831521716).

Almost surely, 2^{122021111220111} is an apocalyptic number.

122021111220111 is a deficient number, since it is larger than the sum of its proper divisors (54256867040481).

122021111220111 is a wasteful number, since it uses less digits than its factorization.

122021111220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943234910 (or 1943234907 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 122021111220111 its reverse (111022111120221), we get a palindrome (233043222340332).

The spelling of 122021111220111 in words is "one hundred twenty-two trillion, twenty-one billion, one hundred eleven million, two hundred twenty thousand, one hundred eleven".