122111210221111 has 8 divisors (see below), whose sum is σ = 122144414755904. Its totient is φ = 122078009468160.

The previous prime is 122111210221097. The next prime is 122111210221141. The reversal of 122111210221111 is 111122012111221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122111210221111 - 2⁷ = 122111210220983 is a prime.

It is a super-4 number, since 4×122111210221111⁴ (a number of 57 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111210221141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64250866 + ... + 66124096.

It is an arithmetic number, because the mean of its divisors is an integer number (15268051844488).

Almost surely, 2^{122111210221111} is an apocalyptic number.

122111210221111 is a deficient number, since it is larger than the sum of its proper divisors (33204534793).

122111210221111 is a wasteful number, since it uses less digits than its factorization.

122111210221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890921.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 122111210221111 its reverse (111122012111221), we get a palindrome (233233222332332).

The spelling of 122111210221111 in words is "one hundred twenty-two trillion, one hundred eleven billion, two hundred ten million, two hundred twenty-one thousand, one hundred eleven".